S&T-vs-IBD-Part-2-On-the-Job
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s发/s/的读音规则一、s在词首时;除了sugar;sure以及sh组合发/ /以外;其余一般发/s/.. 例:surface;serve;seven;six;some;sign比较:design/di'zain/一般前缀;合成词不影响其读音..s仍读成/s/..例:unsafe;unsatisfactory;roadside;teaspoon;snowstorm二、两个s在词尾时读作/s/.. 例:grass;glass;address;press;success;pass;miss;stress;across;swiss; progress;process;kiss三、词尾s在u后读作/s/.. 例:bus;us;minus;abacus;plus;status;virus四、在sis组合的弱读中;两个s都读作/s/.. 例:emphasis;analysis;thesis;crisisemphasise; emphasize; analyse/ analyze; criticise/criticize criticism n.五、s在字母c前常读作/s/.. 例:muscle;discipline;science六、s在某些前后缀中读作/s/..1.在前缀mis-;dis-中;s读作/s/.. 例:mismanage;misjudge; misbelieve;disorder;disobey2.在后缀-sive;sity;-self;-some;-sy中;s读作/s/.. 例:expensive;intensive;decisive;yourself;handsome;troublesome;tiresome;quarrelsome七、s在清辅音前后常读作/s/..1.s在清辅音前常读作/s/.. 例:honest;newspaper;task;satisfy;grasp grab; grip2.s在清辅音后常读作/s/.. 例:sportsman;works;stops;roofs.八、词尾se在字母r;l;n后读作/s/.. 例:horse;nurse;worse;course; universe;pulse;else;tense;senseI couldn't find good references by Googling; and I don't know anything about British English. As I think it through; it is quite complicated Sorry -- we should really get around to some spelling reform. I hope others can help edit this list if they think of exceptions.In American English; typicallyIf there are any prefixes or suffixes causing an s to be in the middle of a word either because the "s" is part of the prefix or because it is part of the root"; the "s" is always unvoiced 清音/s/; e.g. subsist; substandard; mismatch; mistake; etc.An s that is written next to an unvoiced consonant 清辅音 is always unvoiced /s/; e.g. lisp; rasp; history; etc.When the unvoiced consonant of the above rule is t; then the /t/ is silent if the next syllable is syllabic /n/ or /l/:listen; whistle. Otherwise it is pronounced. See the comments for a more detailed description of this rule.An s before m is always voiced /z/: chasm; prism; plasma. However; the top rule takes precedence有优先权; so the s in mismatch is always voiceless /s/.An s that is written doubled between vowels is also unvoiced: massive; missive; missile; etc. However; if the s would occur in the phonetic stream /s+j/ then it assimilates to / /; e.g. in mission.An s that is written as one single letter between vowels is usually /z/;e.g. laser; risible; criticise/ criticize; desert; design; reason; busy; result; reserve; closer the comparative form of the adjective "close"; has an /s/ sound. In the same environment as mentioned above /z+j/ will assimilate to / / e.g. in vision.Terrible exception to the above: in dessert; the s is voiced to /z/. Many native English speakers misspell dessert for this reason. Note also that the difference between desert and dessertis not voicing; but which syllable gets the accent it is the first in desert and the second in dessert.Possess and its derivatives are another exception; the middle "ss" is voiced to /z/. The terminating "ss" is not.Other miscellaneous exceptions: The -ss- in the American state name Missouri is also exceptionally pronounced /z/. In raspberry;the p is silent and the s assimilates to the /b/; so is voiced to /z/.补充:Based on the immediately surrounding letters:Word-internal -ns-; e.g. in i ns ist; te ns e; ti ns el; is almost always pronounced /ns/ with unvoiced /s/. This doesn't apply to words that end in -ns; like pe ns or le ns these have /nz/.Exceptions:clea ns e and pa ns y; which have /nz/. For somespeakers; certain but not necessarily all words starting with "trans" such as tra ns it and tra ns ition have /nz/.Word-internal -ls-; e.g. in el s e; pul s e; is almost always pronounced /ls/ with unvoiced /s/. This doesn't apply to words that end in -ls; like ee ls or stea ls these have /lz/. Exception: pa ls y; which has /lz/.Word-internal -rs-; e.g. in pe rs ist; ve rs e; is almost always pronounced /rs/ with unvoiced /s/. This doesn't apply to words that end in -rs; like sta rs or you rs these have /rz/.Based on identifying particular suffixes:The ending -sive is usually pronounced /s v/ with voiceless /s/; even when there is a vowel letter immediately preceding the letter "s". For example; explo s ive; inva s ive; abu s ive; deri s ive are all pronounced with /s/.The ending -o s ity is always pronounced with voiceless /s/.名词复数后面s的发音规则一般来说;s在元音或浊辅音后读z};在清辅音后面读成s;在t后与t在一起读成ts;在d后与d一起读成dz..cups 杯子 days 日子 hands 手 hats 帽子2、以s;sh;ch;x结尾的词在词尾加-es;读izclasses 班级 buses 公共汽车 boxes 盒子 watches 手表3、以“元音字母+y”结尾的词;加-s;读作z;以辅音字母+y结尾的词;变y为i;再加-es;读iz..boy-boys 男孩 army-armies 军队 story-stories 故事factory-factories 工厂 baby-babies 宝贝4、以o结尾的词;多数加-s;读z..kilo-kilos 公里 photo-photos 照片 tobacco-tobaccos 烟草piano-pianos 钢琴以元音字母+o结尾的词一律加-s;读z..zoo-zoos 动物园 radio-radios 收音机少数以o结尾的词;在词尾加-es;读z..tomato-tomatoes 西红柿 hero-heroes 英雄 Negro-Negroes 黑人potato-potatoes 土豆5、以f或fe结尾的词;多数把f;fe变为v;再加-es;读s..leaf-leaves 树叶 thief-thieves 小偷 wife-wives 妻子knife-knives 小刀 shelf-shelves 架子6、不规则名词的复数形式..1、通过变化单词内部元音字母;构成复杂形式..man-men 男子 woman-women 女人 foot-feet 脚 goose-geese 鹅tooth-teeth 牙齿 mouse-mice 老鼠 child-children 小孩2、单数形式与复数形式相同sheep-sheep 绵羊 deer-deer 鹿 Chinese-Chinese 中国人Japanese-Japanese 日本人规则的名词复数形式一般是在单词后加-s 或-es..其音法方法为:在/p/ /t/ /k/ /f/等清辅音后 /s/Cups; hats; cakes; roofs在/s/ /z/ /M/ /CM/ /DN/等音后 /iz/glasses; roses; brushes; matches; bridges在其它情况下:/z/Beds; days; cities; knives以th收尾的词原读/θ/的;加词尾s后;多读/z/;例如:mouth mouthspath /pa:θz/- paths /pa:Iz/但也有不这样变的;如:month /mΛnθ/ - months /mΛnθs/; length/lengθ/ - lengths/leng θs/;另有些词可变可不变;如:youth/ju:θ/ - youths/ju:θs/或/ju: θz/; truth/tru:θ/ -truths/tru:θs/或/tru: θz/..关于名词复数后面s的发音规则;我相信你已经看过了多遍语法书上名词复数后面的三条发音规则了;只是看不懂;也不会用..要掌握这些复杂难懂的规则;关键是要知道其背后的用意;从而不被表面的文字所迷惑..下面请你睁大双眼;我告诉你它们的真实用意——其实就是为了两个字“顺口”..没明白吗;稍微解释两句..s为什么可发s和z两个音呢;就为了顺口;这两个音一个弱一个强;一个无声一个有声也就是过去所说的;前一个是清辅音;后一个是浊辅音;那么这两个音怎么用呢很简单;遇到单词尾是不响亮的清辅音字母时如p;t;k;f就发s;遇到单词尾是响亮的浊辅音字母如b;d;m;n;r或元音字母如a;e;o;u时就发z;这样做的目的就是为了顺口..清辅音发音时仅气流从嘴里出来;声带不振动;发出的声音较弱;因此英语里认为清辅音是一种不响亮音;而浊辅音和元音发音时声带要振动;发出的声音大;因此英语里认为浊辅音和元音是响亮音..为了追求发音的顺口和协调;英语人民普遍有一个发音倾向;并且大家都在自觉地执行;就是让清辅音和清辅音连在一起如ps;ts;ks;fs;让响亮音和响亮音连在一起如bz; dz;mz; nz; rz; az;他们认为这样发音很顺口协调..在他们看来;要是让一个清辅音和一个浊辅音连在一块;比如fz;kz;pz;tz; 就好像让一个哑巴和一个大叫驴站在一块;怎么看都别扭;不顺口;不舒服..因此英语人民在发名词复数后面s音时就自发自动地出现了的两个现象也就是上面的第一条和第三条:1s在p;t;k;f等清辅音后发s;3在其他情况下即在浊辅音和元音后发z..怎么样;这回你明白了吗;要是没明白的话;别急着往下看;翻回头去再看几遍我上面说的话;直到彻底搞明白了再往下看..我向你保证;以上内容绝对十分简单;只是你过去学英语“复杂”惯了;猛然碰到个简单的;一时半会还转型不过来..等你看明白了上面的话语;我再接着讲..英语里有一些特别讨厌的单词;它们以s;z; sh; ch为结尾;比如单词bus; fox; dish; watch;等;这些单词的结尾音有一个一致的特点;就是和s的发音一样或特别接近;这使得若在这些单词的后面直接加个s来表达复数的话;成为buss; foxs; dishs; watchs的话;单词结尾的发音就出现了难题;因为区分两个一样或十分相近的s音十分困难;不信你念念上面单词;看你的嘴能否区分开..怎样来解决这个难题呢英语人民还真很智慧;他们不知道是谁带了头;想了一个办法来对付这个难题;就是在两个s之间塞个e;变成buses; foxes; dishes; watches;并且让e发音为i;这样一来不就把两个相似的s的发音间隔开了吗妙妙妙看来全世界群众的眼睛都是雪亮的..那么buses; foxes; dishes; watches最后的那个s该怎么发音呢这回该问你了;你不是看懂了我前面说的那段话了吗;里面有“响亮音要和响亮音连在一起”..e是个什么音是元音;元音属声带振动的“响亮音”;并且e在这里发i;那么它后面跟个s该怎么发音;这还用说吗;肯定是顺口协调地与e一同发响亮的z了..因此要是让我来修改上述三条规则;首先就是取消第二条;取消这个像烟雾弹一样的多余规则;都是它把问题搞乱了;这条多余的规则使整个规则的讲解都出现了逻辑上的混乱;就好像告诉别人“人类社会是由人类和大人小孩组成的”;这话谁能听得懂取消第二条后我把上述三条规则改写成如下两条:名词复数后的s1S在清辅音后发s2S在浊辅音或元音后发z..如果你还能进一步看得明白;看得觉醒;我就索性将它再改一改;改成一步到位的、谁都能一眼看得明白记得住的下面两句话: 1S在不响亮音后发s2S在响亮音后发z..。
s'的用法
“s”是代词,也是第三人称单数。
当主语是第三人称单数,或搭配with和不定冠词时,可以使用s“。
“s”的用法主要有以下几称:
一、用于人名后面
一般来说,我们使用第三人称单数时,都会在人名后加上“s”,表示这个人所拥有
的东西。
例如,“John’s office”表示约翰的办公室;“Alice’s house”表示爱丽丝
的房子。
二、用于及物动词后面
当我们使用及物动词描述一件事时,我们通常会在动词后添加一个“s”,表示动作
是针对某个人,某个组织或某个物体。
例如,“She cleans her room every day.”表示
每天她都会打扫她的房间。
我们在表述某个名词所拥有的东西时,也可以在后面加上“s”,例如“a book’s cover”表示某本书的封面。
四、用于搭配with和不定冠词时
当我们搭配with和不定冠词时,也可以加上“s”。
例如,“She goes to the shop with her fri ends.”表示她和朋友一起去商店。
总之,“s”作为第三人称单数,主要用于表示某人所拥有的东西,以及描述某个人、某个组织或某件物体所做的动作等用法,在日常英语学习中十分常见。
目前应用最广泛、输出效果更好的S端子接口。
S-Video端子又称亮色分离端子,是一种专业视频标准接口,只传输视频信号,与音频无关。
S并不是Super,而是Separate,是分离的意思,将视频信号的色度信号C 和亮度信号Y进行分离,分别以不同的通道进行传输,减少影像传输过程中的“分离”、“合成”的过程,减少转化过程中的损失,同时降低信号之间的互扰,减轻视频节目输出时亮度和色度相互干扰的问题,以得到更佳的显示效果。
S-Video端子输出接口支持设备的最大显示分辨率为1024 x768。
目前市场上常见的S端子有三种:4针、7针和9针。
1、4针S-Video接口4针是常见的S-Video端子,目前的电视机、影碟机、投影仪配接的都是4针接口,较早一些的显卡如MX440,FX5200等配置的也是4针的S-Video。
S端子线为单根多芯结构,长度一般在3M之内,最长不能超过5M,否则有可能出现显示画面黑白或者是无信号输出的状况。
实际上视频信号的传输主要取决于传输线的质量,如果主观能够接受不易觉察的图像质量下降并使用高品质信号线,信号的传输距离可以达到30米;如果使用两根信号线传输(在S端子接口处汇合)的高品质75ohm同轴电缆(如RG59 or RG6),传输距离甚至可以达到60-100米。
2、7针S-Video接口标准的7针S-Video比较4针的多出了一路复合信号,可以单独分离输出RCA信号(复合信号),在显卡上就可以省去一个黄色的VIDEO输出接口。
虽然多出的2针功能和定义各不相同,但一般都是把这两针作为标准AV视频信号输出,这样就使得这个7针接口即能分离出一路4针标准S端子信号,又能分离出一路标准的AV视频信号。
有的配备7针S端子的显卡配备一个一转二的转接输出装置,可以分成S端子和AV输出两种模式。
不过,7针的S-Video接口可以直接使用4针S端子线,不必另行购买连接线。
另外,还有部分显卡自带的7针S-Video能够提供色差输出,其针脚的定义有别于上述标准,定义如下:3、9针接口9针的S端子接口针脚定义比较标准较多,一般为两种:一种是为其中4针是标准S端子,2针是标准AV视频信号输出,余下2针是音频信号输出。
s的所有用法
1. “S 可以用来表示复数呀,就像“apples”表示好多苹果一样。
哎呀,你想想,要是没有这个“S”,那说苹果得多费劲呀!
2. S 还能在一些动词后表示第三人称单数呢,比如说“He likes music”里的“likes”。
这不就简单明了地表明是“他”喜欢音乐嘛,多直接呀!
3. 嘿,S 在一些缩写里也有它的身影呢!像“is”缩写成“’s”,“that is”不就可以写成“that’s”嘛,多方便!
4. 你知道吗,S 有时候还能表示所属关系哦,像“my father’s car”,就是说“我爸爸的车”呀,这“S”多重要!
5. S 还会出现在一些固定搭配里啊,比如“as soon as”,“一……就……”,这不是挺常用的嘛!
6. 哇塞,S 也是很多名词复数形式的标志呀,像“dogs”“cats”,
没有“S”可不行,那可就成独苗苗啦!
7. 很多人的名字后面加上“S”也有特别的意思呢,比如“Jones’s”表示琼斯家的。
你说是不是挺有趣的?
8. S 还能在一些表示距离的词后面表示复数呀,像“miles”就是“英里”的复数呢。
9. 哎呀呀,S 真的是有好多好多用法呀,我们可得好好记着呢!
我的观点结论就是:S 的用法真是丰富多样又重要,我们得好好掌握它呀!。
S,SH型单级离心泵型号说明
S、SH型泵是单级双吸、卧式中开离心泵,本型泵的吸入口与吐出口均在水泵轴心线下方,与轴线垂直呈水平方向,泵壳中开,检修时无需拆卸进水口,排出管及电机(或其他原动机),从连轴器向泵看去,水泵为顺时针方向旋转。
根据需要也可生产逆时针旋转的泵,但定货时应特殊提出。
特点及技术参数:液体最高温度不得超过80摄氏度
应用领域:供输送清水及化学性质类似于水的液体。
型号说明及选型规则:例:10SH--19A
10——吸水口直径被25除
SH——单级双吸卧式离心清水泵
19——比转数被10除
A——泵换了不同直径的叶轮
例:150S—78A
150——泵进口直径为150毫米
S ——双吸离心泵
78 ——扬程
A ——叶轮外径第一次切割
, ,。
音标/s/ 在英语中通常与字母"s" 相关,但它也可以出现在其他字母或字母组合中。
以下是一些发音为/s/ 的单词示例:
1. sun -太阳
2. sky -天空
3. sea -海洋
4. sand -沙子
5. song -歌曲
6. star -星星
7. stay -停留
8. stop -停止
9. story -故事
10. study -学习
11. sail -航行
12. sale -销售
13. salt -盐
14. same -同样的
15. save -保存
16. say -说
17. scar -伤疤
18. scart -刺
19. score -得分
20. screen -屏幕
21. script -剧本
22. scrap -废料
23. scrape -刮
24. screw -螺丝钉
25. scribble -乱写
26. scuba -潜水
27. search -搜索
28. season -季节
29. reason -原因
30. record -记录
这些单词中的/s/ 音标可以出现在单词的不同位置,有时在单词的开头,有时在单词的中间或结尾。
发音时,/s/ 音标通常由舌尖或舌边缘轻轻接触上齿或牙龈,同时声带振动。
s单词的意思
"s" 在英语中有多重含义和用法,具体取决于上下文。
以下是一些常见的解释:
1.复数形式:在名词后面加上"s" 通常表示该名词的复数形式。
例如,"cat" 的复数形式是"cats"。
2.所有格形式:在名词后面加上"s" 也可以表示所有格,即某物属于某人或某物。
例如,"John's book"
表示这本书属于John。
3.缩写或简写:"s" 可以用作缩写或简写,例如"Mr."(先生)、"Mrs."(夫人)、"Ms."(女士)以
及"Dr."(博士)等。
4.动词的第三人称单数形式:在动词后面加上"s" 或"es" 可以表示第三人称单数形式。
例如,"he
eats" 中的"eats" 是"eat" 的第三人称单数形式。
5.音节:在单词中,"s" 可以作为一个音节出现,例如"silence" 中的"si-len-ce"。
6.其他含义:在某些特定的单词或短语中,"s" 可能具有特定的含义,例如"is"、"has" 等。
请注意,要确定"s" 在特定上下文中的确切含义,需要考虑该词或短语的整体结构和语法规则。
以s开头的英文单词现在小编为大家整理了英语单词,希望能帮助大家学习英语单词。
super超级supper晚饭summer夏季sun太阳sunny阳光明媚的son儿子sister姐妹student学生suspect嫌疑人sugar糖should应该shoe鞋子snack零食snake蛇snow雪snowy有雪的spend花(费)sing唱song歌singer歌手slim苗条的slow慢的sunglass太阳镜secular ['sekjulə] n. 牧师section chief 部门主管Salesman销售员Secretary秘书soldier士兵surgeon外科医生singer歌手steward ['stjuəd] n. 乘务员skipper ['skipə] n. 船长skater溜冰者social worker社会工作人员speech therapist语言医生special correspondent n. 特派记者spinner ['spinə] n. 纺纱工人system operator系统操作员systems analyst系统分析人员slave [sleiv] n. 奴隶State Food and Drug Administration 国家食品药品监督管理局sack n.+袋,包 vt.解雇sad a.悲哀的,悲痛的saddle n.鞍,鞍状物safe a.1.安全的,平安的 2.谨慎的,可靠的safety n.1.安全,保险 2.保险装置sail v.航行(于) vi.启航,开船 n.1.帆,篷 2.航行sailor n.水手,海员sake n.缘故,理由 for the ~ of 为了……起见salad n.凉拌菜,色拉salary n.薪水,工资sale n.1.出售,卖出 2.贱卖,廉价出售 3.销路,销售额 on ~减价出售salesman n.售货员,推销员salt n.盐 vt.腌,盐渍same a.相同的,同样的pron.同样的人,同样的事物the ~as 与……一致的与……相同的sample n.样品,试样vt.抽样试验,抽样调查sand n.1.沙 2.[pl.]沙滩,沙地sandwich n.夹心面包,三明治 vt.夹入中间satellite n.卫星satisfaction n.满意,满足 2.令人满意的事物satisfactory a.令人满意的satisfy vt.1.满足,使满意 2.说服,使相信Saturday n.星期六saucer n.茶托,碟子sausage n.香肠save v.1.救,拯救 2.储蓄,储存 3.节省saving n.1.[pl.]储蓄,存款 2.节省saw n.锯子,锯床 v.锯,锯开say v.说,讲 Vt.说明了,表明 n.发言权,意见scale n.1.刻度,标度 2.[pl.]天平,磅秤 3.比例,比例尺 4.大小,规模 on a large ~大规模地scarce a.1.缺乏的,不足的 2.稀有的scarcely ad.几乎不,简直没有scare v.惊吓,受惊 n.惊恐,恐慌scatter v.分散,散开,撒开scene n.1.景色,景象 2.舞台,发生地点 3.(戏剧等中)一场scenery n.1.风景,景色 2.舞台布景schedule n.时间表,日程安排表v.安排,排定on ~按时间表,及时,准时scheme n.1.计划,规划 2.诡计,阴谋 3.配置,安排scholar n.学者school n.1.学校 2.(大学里的)学院 3.学派,流派science n.1.科学, 2.学科scientific a.科学的scientist n.科学家scissors n.剪刀scold 责骂,申斥scope (活动,影响等的)范围 2.(发挥能力等的)余地机会score n.1.得分,分数 2.二十 v.得(分),记(……的)分数scratch v.抓,搔,抓伤 n.抓,搔,抓痕scream v.尖声叫 n.尖叫声screen n.1.屏幕 2.帘 vt.掩蔽,遮screw n.螺旋,螺钉 V.拧,拧紧sea n.海,海洋seal n.1.封铅,封条 2.印,图章 Vt.封,密封search v.& n.(for)搜查,搜寻season n.季,季节seat n.1.座,座位 2.所在地,场所 Vt.使坐下second num.第二 a.二等的,次等的 n.秒secondary a.1.将要的,二级的 2.嘴的,第二的secret a.秘密的,机密的 N.秘密,奥秘secretary n.1.秘书 2.书记section n. 2.断面,,剖面 3.部门,科secure a.1.(from,against)安全的,可靠的 2.放心的,无虑的security n.安全see v.1.看,看见2.领会,理解3.获悉,知道vt.1.会见,访问2.目睹,经历~ off 送行~ to 注意,务必seed n.种子 vi.结实,结籽 v.播(种)seek v.(after,for)寻找,探索seem v.好像,似乎seize v.抓住,逮住 vt.没收,查封seldom ad..很少,不常select vt.选择,挑选 a.精选的selection n.1.选择,挑选 2.选集,精选品self n.自我,自己selfish a.自私的sell v.出售,卖senate n.参议员,上院send vt.1.送,寄 2.派遣,打发~ for 派人去请senior a.1.年长的 2.资格较老的,地位较高的sense n.1.感官,官能 2.感觉 3.判断力,见识 4.意义,意思 Vt.觉得,意识到 make ~讲得通,有意义sensitive a.(to)1.敏感的 2.易受伤害的 3.灵敏的sentence n.句子 2.判决,宣判 vt.宣判,判决separate a.(from)分离的,分开的 v.(from)分离,分开September n.九月series n.1.系列,连续 2.丛书 a ~ of 一系列,一连串serious a.1.严肃的,庄重的 2.严重的,危急的 3.认真的servant n.仆人serve v.1.服务,尽责 2.招待,伺候 3.符合,适用 4.供应(饭菜)~as 作为,用作service n.1.[常pl.]服务,帮助 2.公共设施,公用事业 3.维修,保养 4.行政部门,服务机构 vt.维修,保养。
电源选项中S1,S2,S3,S4,S5的含义, 待机、休眠、睡眠的区别和优缺点电源选项中S1,S2,S3,S4,S5的含义以 ACPI 的規格來說吧!ACPI(Advance d Configu ration and Power Interfa ce),即高级配置与电源接口。
这种新的能源管理可以通过诸如软件控制"开关"系统,亦可以用Mod em信号唤醒和关闭系统。
ACPI在运行中有以下几种模式:S0 正常。
S1 CPU停止工作。
唤醒时间:0秒。
S2 CPU关闭。
唤醒时间:0.1秒。
S3 除了内存外的部件都停止工作。
唤醒时间:0.5秒。
S4 内存信息写入硬盘,所有部件停止工作。
唤醒时间:30秒。
(冬眠状态)S5 关闭。
判断系统是处于S1模式还是在S3模式,最简单的办法是仔细观察系统的情况:在ACPI的S1休眠模式下,只有CPU停止工作,其他设备仍处于加电状态。
而在S3模式(BIOS->电源管理->Suspend to RAM设为En able,除内存外其他设备均处于断电状态)。
所以我们只需按一下光驱上的弹出钮即可,不能打开光驱门则处于S3状态,反之则处于S1状态。
还有一种比较简单的方法是:在S3模式下,系统完全是安静的,所有风扇全部停止工作,此时系统不能从键盘唤醒,手工唤醒的方法只能是按前面板上的电源按钮。
S1 =>Standby。
即指说系统处于低电源供应状态,在 windows or BIOS 中可设定屏幕讯号输出关闭、硬盘停止运转进入待命状态、电源灯号处于闪烁状态。
此时动一动鼠标、按键盘任一键均可叫醒计算机。
S2 =>Power Standby。
和 S1 几乎是一样。
S3 =>Suspend to RAM。
即是把 windows现在存在内存中的所有数据保存不动,然后进入「假关机」。
Mergers & InquisitionsSales & Trading vs. Investment Banking – Part 2 – On the JobIntroductionBrian: Welcome back to our second podcast in this series on sales and trading versus investment banking. This is Brian from Mergersand Inquisitions. I’m here with Jerry, who has been contributingto the site and helping me with some projects behind thescenes.He has worked in sales and trading at two bulge bracketinvestment banks before and then started his own prop tradingfirm, so he has quite a lot of experience in the realm of salesand trading.In the previous podcast, we spoke about the recruiting processfor both investment banking and sales and trading, and how itdiffers depending on what you’re going for, what type of firmyou’re going after, how you network, how you write yourresume, and how interviews are different for these two differentfields.This time around, we’re going to be going into what it’s actuallylike on the job, what it’s actually like to work in both investmentbanking and sales and trading, how you get assigned to groups,how you interact with your co-workers, how working in Asia ordifferent parts of the world is a bit different, and finally, careerpaths, exit opportunities, and what’s available for you in thefuture if you decide to go into one of these industries.To kick off this discussion and to get started here, people knowa lot about the training programs in investment banking. Onceyou actually get a full time offer, there’s a lot of knowledge aboutwhat you learn in training. It’s a lot of accounting, financialmodeling, valuation – those types of skills.What is the training program like in sales and trading? Let’s sayyou’ve gotten an offer and you’re about to start working. Howwould your firm actually go about training you?Sales & Trading Training Programs & Group Assignments/Jerry: Let me talk first about how investment banks would train their traders. Since a trader, like an investment banker, is consideredfront office staff of an investment bank, if this investment bankhas a global training program – usually American investmentbanks will have a two month training program for all their newhires all over the world. They all go to New York and get twomonths of training. If it’s in Europe, then it might be in London.That just covers a wide variety of basic financial concepts.After that, the trader will go back to their trading desk whereverthey’re based. Then they’ll get training directly from theirmanager. This is where you can get some variation on how thisworks.Some traders – they’re able to start trading real money on thevery first day, although, on a smaller budget, they’re only able totrade a small amount of money.Some traders – they have to trade with either fake money or nottrade at all for a long time. It may be for three to six months oreven longer.Basically, the way that trading is different from investmentbanking is you really can’t learn trading just by studying itwhereas in investment banking, you can learn modeling bybuilding models in class or on your own.In trading, the psychology of trading fake money and thepsychology of trading of real money is totally different becauseyou might get really excited or nervous when trading actualmoney. The only real way to learn trading well is to actually dothe trading.Basically, your manager will try to ease you into the position byfirst letting you trade with mock money and then letting youtrade with a small amount of real money, and then increasingthe amount of money that you trade. Basically, you learn bydoing.Brian: That’s really interesting because I know that the process is alittle different but I didn’t realize that with trading, there’s muchmore of that element of training once you get back to your realdesk, your real group, and once you start working./I know for banking, they don’t really do that too much. They kindof just throw you into the fire and say, “We have to do a pitchbook, we have to do a deal. Figure out what to do and do it,” butthey don’t really give you any training wheels. It’s a little differentin that respect.You brought up an interesting point, which is that in trading, youstart off with smaller amounts of money, or perhaps in thebeginning with nothing at all while you’re learning the ropes, andthen move up to trading larger amounts.How does that process work exactly? I’ve heard before thatthere are junior traders and then actual real traders. How arethey different? How do you move from a junior trader role up tosomeone who’s making more significant trades, let’s say? Jerry: This varies widely among different investment banks, andobviously among the different types of financial institutions thatconduct trading. Some investment banks will have a differencebetween junior traders and senior traders.Some banks will not use titles like this at all. Basically, you’llhave the same title for a couple of years but the amount ofmoney that you’ll be trading will gradually increase as time goeson.If you’re at an investment bank, you prove that you’re able tocontrol risk well and that you don’t panic when the market goescrazy. If you’re able to steadily make money, then the bank willincrease the amount of risk you’re able to take and the amountof money you’re able to trade with.This is also similar at a hedge fund or a proprietary trading firm.You’ll start out with a smaller amount of money. Such firmsmight have more simplistic rules for increasing the amount ofmoney that you’re able to trade.For example, at a proprietary trading firm, they might just say,“Okay, if you make over X amount of money per month for anumber of months in a row, then your trading budget will be Y.The risk you’ll be able to take will be Z.” The set of rules and theamount you’re able to trade is evaluated differs by organization./Brian: Okay, I see. Once you’ve gone through the training process and it’s time to actually pick which desk you’re working at for tradingfor example, how does this process actually work?I’m assuming that if you do an internship, and you work on aparticular desk, then you’ll probably go back to it but let’s saythat you haven’t worked at that bank before, let’s say you’re newto it. How would they actually assign you to a particular group orto a particular desk in trading?Jerry: Most financial institutions will actually hire you directly to work ina specific area in trading. For example, before you even enterthe firm, it will be decided that, okay, you will be doing credittrading or you will be doing rates trading.There might be some firms that just hire somebody as a traderand then let them do a rotation in each of the different tradingdesks, and finally let them settle down at one desk, but that ispretty rare nowadays. You might get a chance to rotate aroundthe different trading departments if you’re an intern, but as a full-time hire, that’s less likely.A Day in the Life of a TraderBrian: Okay, I see. We’ve covered the training program, how thatworks, and how you actually get assigned to groups. One reallycommon question I get is: What do you actually do once you’vestarted working? You’re past the training phase, to kind of gothrough a day in the life of both a trader and a banker.There’s a lot of content on the site already about a day in the lifeof an investment banker. I guess the way I’d summarize it, incase you haven’t read it already, is that the days are veryrandom. Generally, you’re going to start off working maybe eightor nine, 9:30 in the morning.Usually, mornings are not too active. Afternoons are actually nottoo active in investment banking. You might have meetings, youmight have calls with companies, you might be doing randomtasks and such, but actually what typically happens is that at theend of the day, or at least, the end of the day for the seniorbankers, they all pack up, leave, and go home.They drop a bunch of work on your desk and say, “Okay,analyst or associate, here’s what has to get done by tomorrow/morning.” They just expect that you’re going to stay there andwork on it until it gets done. Actually most of the time, you’redoing the bulk of your work at night.This is mostly true in the U.S. I know that in other regions it’s abit different. The lifestyle and hours can be a bit different, thework style can be different but this is what I would say iscommon at large investment banks, in the U.S. anyway.For trading, we’ve discussed before, in the first podcast, how it’sa little different in that the trader is very, very busy during markethours but to go into more detail on that, what would you say theaverage day in the life of a trader is like?Jerry: Sure. Why don’t I take the most typical example of a proprietary trader working for an investment bank in New York doingregular stock trading? The trader would probably get up in themorning, about two or three hours before the market opens, andget to the firm maybe one to one and a half hours before themarket opens.There would be usually a morning meeting where all the tradersget together. It might be in a separate room or it might just be onthe trading floor itself where everyone pulls their chairs together.The traders from the different markets will talk to each otherabout what they think the movements will be today andsummarize the movements from the previous day so that wayeveryone has a better idea of what the markets will do today,since each market tends to influence the other markets.For example, movements in the stock market might affect themovements in the credit market. Then, during market hours – inNew York, at 9:30 a.m. – the stock market would open and thetrader would have to be monitoring the market at all times.This actually makes it a little difficult to go to the bathroomsometimes. It might be difficult to take a lunch break if themarket is especially busy on a certain day. There is alwayspressure to be constantly monitoring the market while themarket is open.A trader will monitor the market and, if a good opportunitycomes up, will make a couple of trades, and will also talk with/brokers if it’s a market that involves brokers, and try to get more information from them.If they have traders both internally and traders at other firms that they’re friends with, they might make a couple of calls, and try to get more information on the markets. They’ll just keep on doing that until the market close.After the market close, the trader will have to work on wrapping up the trades for the day. If it’s a normal stock market, then most all of the settlement is either automated or taken care of by the middle and back office.If it’s an over-the-counter market, like for example credit default swaps, then the trader might have to spend some time wrapping up the trades, making sure they’re all settled properly, calling operations and back office to make sure the trades are booked correctly.Then the trader might spend some time analyzing stocks, preparing for the next market day, analyzing the trades they did for that day. Maybe after some analysis, they realize they need to rebalance their portfolio of stocks.Then they’ll know that the next day they need to, for example, increase their allocation to a certain industry. They might even build simulations of stock trades – different sorts of analysis might occur later in the day.There tends to be a trend where traders who make a lot of money actually work less and traders who are not making as much money work more because, even if the traders who make a lot of money don’t work that hard, there’s no way they’re going to get fired because the bank knows that they’re bringing in a lot of dough for the bank.Also they know they’re going to get a big bonus just because they made a lot of money. The traders who aren’t making money are freaking out because they know that they might get fired if they don’t make money sometime soon.That’s a basic wrap-up of what a typical day in the life of a trader is like./Brian: Interesting. Just a few questions on that because I’m actually kind of curious because I’ve seen a few trading firms but haven’treally worked there at all. You mentioned the middle of the daythat it can be hard to take a bathroom break for example.This may sound like a stupid question, but sometimes thingscome up during the middle of the day – personal errands, or youhave to visit the doctor, or something like that.With banking, it’s usually fine to step out for an hour in themiddle of the day if nothing important is going on becausechances are, you can just give work to someone else or itdoesn’t need to be done right this moment but obviously it’sdifferent in trading.Just logistically, let’s say that you have some kind of personalerrand in the middle of the day. For something like that, howwould you deal with it? Could you do anything?Jerry: The most common way to deal with a problem like that is just to ask a colleague to help monitor your positions while you’regone. It would be very dangerous in most situations if you justleft your portfolio there and the market is still moving, andnobody is looking at it.Let’s say one of the companies that you invested in or that youhold stock in suddenly goes bankrupt or announces somethingcrazy, and you’re not there at the desk to take care of thatsituation, then that could result in huge losses for the firm in avery short amount of time, so you need to get somebody to lookat your positions for you.Brian: I see. You mentioned that if you step away, somethingdisastrous could happen because of the volume of money thatyou’re trading here. I know this varies a lot by groups andbanks, and different trading strategies, but on average, whatsize trades are we usually talking about here?People who are day trading might be trading hundreds orthousands of dollars for example, but I’m assuming that it’s waybigger than that at banks. Are we talking about tens ofthousands, hundreds of thousands, millions of dollars in singletrades?/Jerry: It depends a lot in the market that you’re working in. Forexample, I worked mostly in credit trading – the size of mosttrades ranged from about five million dollars notional to about$20 million notional.If you were trading stocks, as a junior trader you might betrading notional amounts of trades in the millions in your firstyear of trading. Something like hundreds of millions of dollars instock? Well, that’s not going to happen in your first year oftrading. I’m talking about the notional amounts for single trades.As a day trader for a proprietary trading firm, in your first year,most of your trades will be under one million dollars. When Iwas running my own proprietary trading firm, a lot of traders inthe very beginning got about $50,000 worth of buying power.That increased more to $500,000 and a million after a couplemonths on the job.Brian: Okay, definitely a completely different scale from what people in their bedrooms trading on E*TRADE are dealing with on a dailybasis. You went over the day in the life of a trader, what youmight expect. The bottom line is it sounds like you’re workingmaybe 12 or so hours per day. Would you say that is accurate? Jerry: Yes, I would say that’s a pretty good average for a lot of traders, both at investment banks and hedge funds. Since market hoursare a couple hours less than that, you only need a few hoursbefore the market opens and a few hours after the marketcloses to wrap up your trades.Then you can leave – unlike investment banking where rightbefore you try to leave the firm, you might get a ton of workdumped on your desk at that moment. The work hours everyday are usually pretty constant.Sometimes you might have to stay late if there’s a specific typeof analysis that you want to do, and you want to get somethingready for a big announcement that’s coming out the next day.Or if you’re the type of trader that has to work with thesalespeople to make trades directly with clients, you might haveto work indirectly with a client that’s in a different time zone.That might make you stay later at work but most of the cases,it’s pretty normalized, the work hours./Brian: It sounds like the bottom line is you would expect maybe a 60 hour work week for sales and trading whereas investmentbanking is really all over the map, but I would say expect maybe80 to 100 hours on average with a lot of unpredictability.It’s completely unlike trading. You might have a day where yougo home at 7:00 p.m. and the next day you might have to pullan all-nighter for no apparent reason.You brought up an interesting point there with the possibility ofhaving to work with the salespeople. When you went throughthe average day in the life of a trader, you talked about howyou’re monitoring the market, you’re looking at newsbeforehand, you’re planning the day after the market closes,and then you’re making trades during the day.How much interaction is there with the sales force? What do youhave to work on together with them?Jerry: This depends on what kind of trader you are. If you’re a purely proprietary trader, which means that you take the firm’s moneyand then you use that money to trade purely for speculativeprofit, then you don’t really deal with salespeople.If you’re, let’s say, a flow trader or an agency trader – a flowtrader means that you need to trade with clients. There is a flowof clients that comes to the bank.For example, a client might want to buy a credit default swap onMicrosoft, or maybe the client is trying to hedge risk onMicrosoft so you would need to sell a Microsoft credit defaultswap to that client. If you don’t like the risk of that, maybe youwould take an opposite trade in the market to hedge out thatrisk.Depending on what type of trader you are, you might have zerointeraction with the sales force, or you might be interacting withthem all day long. It really depends on the type of trading. Brian: Essentially what happens is that the client would come to the salesperson, and they would say, “I want to buy X, Y, and Zsecurities.” Then they would come to you and say, “Can youhelp me make the trade for this, and can you actually get this forthe client?”/Jerry: Exactly. If the trader says, “No, there’s no way we can take that sort of position. We don’t want to make that trade with theclient,” then the client might be upset so the investment bankwill try to make the client happy by trying to execute mosttrades.If the risk is way too big and the trader doesn’t want to do it,then yes, the trader might analyze the trade and say it’s notworth it for us to do this.Brian: During the day, we went through a sample day in the life of atrader but for the sales force, for anyone working in sales – andI know you’re not an expert because you were on the tradingside.But for sales, what I would imagine is that most of the day isprobably just spent calling clients, talking to them on the phone,trying to find new clients if that’s what your role involves. Is thatpretty accurate that basically they’re spending most of the dayon the phone?Jerry: Right. A large amount of time everyday is spent just callingclients and trying to give them information about the markets,and also, making recommendations for what they should buy orsell.If they’re really good at convincing, just like selling any otherproduct, they might convince the client to purchase, let’s say100 million shares of Microsoft.Then the client would execute that trade through the investmentbank. It’s generally accepted procedure for the client to placethe trade through the bank whose salesperson convinced themof the trade.Let’s say if a client listened to advice from Bank A and thenplaced the trade through Bank B. That would be really messedup and nobody would want to work with that client again – sothat’s the way it works.Salespeople also need to spend a lot of time making theirclients happy. This might mean sending Christmas cards andNew Year’s cards, taking them out to dinner and showing thema really good time, sending them birthday presents, stuff like this/to make sure that that client keeps on doing business with theinvestment bank.Brian: It’s like any sales job really. It sounds like it’s completelyrelationship-driven. If you’re more of a people person than ananalytical person, then maybe that’s a better fit for you.One other point I wanted to touch on here is just your interactionwith co-workers. For investment banking, I think at least if youwork at a large bank in, say, New York or London for example,it’s generally pretty hierarchical.What I mean by that is that other analysts will hang out witheach other, and associates to some extent – they are higher upthan you but you’re still at entry level.Beyond that, once you get up to the mid-level – VPs, seniorVPs, directors, and then finally MDs – generally as an analyst,you’re not going to have too much interaction with thembecause they’re busy trying to wine and dine clients and tryingto actually bring in business for the bank.You’re just crunching numbers and making presentations mostof the time so I would say really most of the co-workerinteraction on the investment banking side happens with yourother analysts.You’ll go to Starbucks, you’ll go out to eat, they’ll hang out afterwork, and you form a pretty close bond because they’re all inthe same position. It’s sort of like if you join a fraternity and youhave to go through hazing. That’s sort of what being in ananalyst program at an investment bank doing investmentbanking is like.What is it like on the trading side? Do you talk to your co-workers much during the day or are you just too focused on themarket?Sales & Trading Co-Worker InteractionsJerry: That’s a great question, Brian. It often depends on how focused you are on the market during the day. Some traders will becompletely absorbed in the market, especially if the market isvery volatile that day, and they won’t really be able to talk tomany people during market hours./However, trading well usually does require significant interaction mainly with other traders and to a lesser extent, with people the middle office and sales.The reason for the need for this interaction is because you need to understand how other markets are functioning since other markets might affect your market.If you’re working as an equity trader, you might talk with the options traders to figure out if a huge order in the options market is affecting the price of the stock for the option that is being traded.Another interaction you might have is with the risk department. If you want to make a really big trade or you want to buy a stock in a very risky company, then you might need to get approval first from the risk department. That might be a big argument or discussion as to whether or not you’re allowed to make that trade.In terms of hierarchy, trading is a lot more flat. One reason is because a junior trader might easily make more money than a senior trader just because they’re having a better month or year or because they’re actually more skilled.Unlike investment banking, some people are just born to do trading well and they can do it very well very quickly whereas other people might not do well even if they trade for years.If, let’s say, there’s the head of a trading department, they’re not going to be sitting in a corner office separated from everyone else because that would just make it very hard to trade trading ideas.When the market is moving very quickly, you don’t have time to walk over to a corner office, have a meeting, and then come back to the market and make a decision. You need to – bam, one, two, three – you need to make decisions right at that moment. Sometimes people yell if necessary. Everyone needs to be able to communicate with everyone else instantly. Sometimes the need for formality, to have slow meetings, that just doesn’t work for trading./Brian: Picturing the trading floor here, is it kind of like Boiler Roomwhere it’s very loud, people are always screaming at each otherand there’s always a lot of action going on? Are we talkingabout what is described in Liar’s Poker for example?Jerry: I would say both the movie Boiler Room and the book Liar’sPoker would slightly exaggerate what happens on most tradingfloors. That’s also because that book and that movie are slightlydated. Hopefully traders are a bit more civilized now and don’tthrow phones at the heads of interns like they did in Liar’sPoker.It’s true that things that can get quite hectic sometimes andpeople will be excited about the market. Everything is very time-sensitive. One trade placed one second earlier might make areally big difference before a rival firm makes a similar trade andpushes the market in one direction or the other.Definitely, there’s that aspect of attention and sometimes peopleyelling when necessary, but usually it’s not that crazy. It’s noteveryone screaming at each other all day long, everyday. It’snot like that.Brian: I guess that’s good to hear from the perspective of your health, although it does make it a little less interesting to not havepeople screaming at you all day.Another question on lifestyle here – and I’m partially responsiblefor this phrase getting popular – but we have to go to themodels and bottles question.For investment banking, some people are kind of obsessed withgoing out to clubs with their co-workers and getting a table.They’re paying $400 USD to get a table, get expensive alcohol,and sitting there and acting important at a club, which I think iskind of stupid.I did it a couple of times but I was not really that into it. Most ofthe going out with co-workers was more just going to bars,going to events, that kind of stuff. Not quite as much going toexpensive, high-end clubs, at least where I was on the WestCoast of the U.S.For trading though, how would you describe it? I know obviouslyyou were working in Japan so maybe it’s a little different, but/how would you describe the going out scene? Do you do muchwith your co-workers outside of work?Jerry: Going out with co-workers can be interesting, but most of it just involves going to bars or going to restaurants and chatting witheach other, just having a good time. The really interesting partcomes in when the brokers have to take the traders out for agood time.When the traders go out for a good time, they’re all paying outof their own pockets to have fun. When the broker takes thetrader out for a good time, the broker’s firm is paying for thegood time, so basically, the broker has the right – or you couldeven say the mandate – to spend a lot of money to make thistrader happy, to make sure that the trader spends a lot ofmoney on trades with the broker firm.The reason for this is because in markets that require a broker,which would be most over-the-counter markets, a trader canchoose to execute their trades through a selection of differentbrokerage firms.From one trade, a brokerage firm might make a brokerage feeof thousands of dollars. Obviously it makes sense for brokers tospend tons of money on taking traders out to have a good time.As an example, one of my friends from Stanford – who shallremain unnamed – and worked at a bulge bracket investmentbank in New York, once went out with a broker and three othertraders. They just had dinner and a couple nice wines and itturned out to be $15,000 for one night.A salesperson at the Tokyo branch of an American bulgebracket investment bank said he spent – usually when takingone client out to dinner at hostess clubs – they spent about$1,000 per night. That’s the salespeople taking the clients out todinner, not the brokers taking the traders out to dinner.Basically this culture of people taking their clients out to dinner,to hostess bars, and maybe to establishments even more shadythan hostess bars, this is a huge amount of expenditure beingspent at investment banks. I would say that’s probably thebiggest aspect of mottles and bottles for traders and forsalespeople./。