can练习题.pptx
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(1)CAN的ISO/OSI参考模型的层次结构分为物理层和数据链路层。
(2)CAN报文帧格包含11位标识符的标准帧和29位标识符的扩展帧。
(3)微控制器和SJA1000之间状态、控制和命令信号的交换都是在控制段中完成的。
(4)SJA1000检测到有复位请求,中止当前报文收、发工作,进入到复位模式,当复位请求位出现1到0的变化,CAN控制器将返回到操作模式。
(5)验收滤波器由验收代码寄存器和验收屏蔽寄存器定义。
(6)改变验收滤波器配置的途径:在运行中改变和在复位模式改变。
(7)CAN总线智能节点的软件设计包括:CAN节点初始化、报文发送和报文接收。
(8)CAN总线上用显性和隐性两个互补的逻辑值表示“0”和“1”。
(9)验收滤波器的滤波模式包括单过滤模式和双过滤模式。
2.远程帧由6个不同的位域组成:帧起始、仲裁域、控制域、CRC域、应答域、帧结尾4. CAN总线报文传送由4种不同类型的帧表示,分别是数据帧、远程帧、错误帧、过载帧。
8.过载帧由过载标志和过载界定符组成。
9. CAN总线的同步方式有两种:硬同步和重新同步。
10. SJA1000有两种操作模式:支持CAN2.0A协议的BasicCAN模式和支持CAN2.0B 协议的PeliCAN模式。
18. 在CAN总线中存在5种不同的错误类型,即:位错误、填充错误、CRC错误、格式错误、应答错误。
(1)CAN报文中帧类型不包括(C)。
A、数据帧B、远程帧C、应答帧D错误帧(2)SJA1000中,状态寄存器对于微控制器来说是(B)。
A、只写寄存器B、只读寄存器C、可读可写D、以上均不对(4)CAN发送缓冲区列表中,数据长度最大为(D)字节。
A、5B、6C、7D、8(5) 在(C)模式中才能对CAN寄存器的进行设置。
A、工作模式B、操作模式C、复位模式D、自检模式(7)可以作为CAN总线的传输介质是(D)。
A、光纤B、双绞线C、同轴电缆D、以上均可(8)下面哪种说法是错误的(C)。
英语情态动词can练习题(推荐完整)编辑整理:尊敬的读者朋友们:这里是精品文档编辑中心,本文档内容是由我和我的同事精心编辑整理后发布的,发布之前我们对文中内容进行仔细校对,但是难免会有疏漏的地方,但是任然希望(英语情态动词can练习题(推荐完整))的内容能够给您的工作和学习带来便利。
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英语情态动词can练习题(推荐完整)编辑整理:张嬗雒老师尊敬的读者朋友们:这里是精品文档编辑中心,本文档内容是由我和我的同事精心编辑整理后发布到文库,发布之前我们对文中内容进行仔细校对,但是难免会有疏漏的地方,但是我们任然希望英语情态动词can练习题(推荐完整) 这篇文档能够给您的工作和学习带来便利。
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英语情态动词can练习题(推荐完整)情态动词练习题一、选择题()1. you swim?-—____, I can. A。
Can ,No B。
Do Not C. Can ,Yes()2。
Can Amy ___? A. swim B. to swim C. swims()3.___she play chess?—No, she____. A。
Can; can’t B。
does, can C。
Can, can二、完成句子.1。
Tom can play volleyball。
(对划线部分提问) _____ ____ Tom___ ?2.The boys can play soccer。
《现场总线》一、填空(0.5*32=16分)【10分钟】1.CAN总线数据帧由7个不同位场组成:、、、、、、,长度可变的位场是。
2. CAN总线报文传送由4种不同类型的帧表示和控制,分别是帧、帧.帧和帧。
3. CAN总线中,就错误界定而言,一个单元可能处于下列3种状态之一:、和和;为了界定故障,在每个单元中都设有两种计数:和。
4. 数字数据编码有、、、、、。
模拟数据编码有、、。
5. CAN总线的总线仲裁机制是。
数据帧或远程帧中能使用位填充规则编码的场有、、、、。
二、判断题(对,错)(2*5=10分)【10分钟】1.CAN总线数据帧中参与CRC计算的有帧起始、仲裁场、控制场、数据场,包括填充位。
()2. CAN数据帧中的远程发送请求位即RTR位为隐性。
()3. 在DeviceNet现场总线中,实例ID值0表示类本身。
()4. 在CAN总线中,ID.0是首先发送到总线上的报文标识符。
()5. 载波监听多路访问/冲突检测机制和令牌访问控制方式属于两种不同类型的介质访问控制方式。
()三、选择题(3*10=24分)【10分钟】1. SJA1000是:()A. CAN控制器接口芯片B. CAN控制器驱动芯片C. 在片CAN控制器芯片D. 独立CAN控制器芯片2. CAN总线错误帧的位长度为:()A. 6~12B. 14C. 14~20D. 203. CAN网络上的节点数取决于总线驱动电路,目前可达:()A. 32B. 64C. 110D.1274. 标准格式的CAN数据帧,若计填充位,()A. 最短为42位,最长为125位B. 最短为42位,最长为129位C. 最短为44位,最长为127位D. 最短为44位,最长为132位5. CAN总线中,若具有下列报文ID的4个标准格式数据帧争用总线,胜出的是()A. 11001000001B. 11001000010C. 11001100001D. 110011010016. ISO11898对CAN总线典型电平规定如下:()A. 显性:V CAN–H=V CAN–L=2.5V,V diff =0V;=3.5V,V CAN–L=1.5V,V diff =2V。
CAN总线习题选择题1、CAN总线错误帧的位长度为:()A. 6~12B. 14C. 14~20D. 202、若SJA1000的输出控制寄存器OCR的值设为0x1A,则其TX0引脚上的输出方式为:()A. 双相输出,悬浮B. 正常输出,上拉C. 正常输出,下拉D. 正常输出,推挽3、CAN网络上的节点数取决于总线驱动电路,目前可达:()A. 32B. 64C. 110D.1274、SJA1000是:()A. CAN控制器接口芯片B. CAN控制器驱动芯片C. 在片CAN控制器芯片D. 独立CAN控制器芯片5、CAN的正常位时间由同步段、传播时间段、相位缓冲段1和相位缓冲段2这4个时间段组成,1次采样时其采样点位于()。
A. 同步段的终点B. 传播时间段的终点C. 相位缓冲段1的终点D. 相位缓冲段2的终点6、CAN总线定时寄存器1(BTR1)的BIT7位即SAM 位为“1”时,总线被采样()A. 1次B. 2次C. 3次D.4次7、CAN总线中,若具有下列报文ID的4个标准格式数据帧争用总线,胜出的是()A. 11001000001B. 11001000010C. 11001100001D. 110011010018、ISO11898对CAN总线典型电平规定如下:()A. 显性:V CAN–H=V CAN–L=2.5V,V diff =0V;隐性:V CAN–H=3.5V,V CAN–L=1.5V,V diff =2V。
B. 隐性:V CAN–H=V CAN–L=2.5V,V diff =0V;显性:V CAN–H=3.5V,V CAN–L=1.5V,V diff =2V。
C. 显性:V CAN–H=1.75V,V CAN–L=3.25V,V diff =-1.5V;隐性:V CAN–H=4V,V CAN–L=1V,V diff =3V。
D. 隐性:V CAN–H=1.75V,V CAN–L=3.25V,V diff =-1.5V;显性:V CAN–H=4V,V CAN–L=1V,V diff =3V。
can的练习Can Practice姓名:_______________一。
按要求填空。
1.Tom can read。
but he can’t write English.2.It is so hot。
They can swim in the river.3.The sun is shining。
We can see the sun in the sky.4.Li Ming can ride a XXX.5.He can listen to the。
now.6.I can sing。
but I can’t draw.7.I don’t like running。
I can’t run fast.8.We are the students。
We can speak Chinese.9.School is over。
Let’s go shopping.10.Peter is young。
He can sit in front of me.二。
将下列肯定句改为否定句。
1.Tom can’t write English.2.They can’t swim in th e river.3.We can’t see the sun in the sky.4.Li Ming can’t ride a bike.5.He can’t listen to the。
now.6.I can’t draw.7.I can run fast.8.XXX.9.Let’s not go shopping.10.Peter can’t sit in front of me.1.Your English writing skills are impressive.2.Tigers are known for their incredible speed.3.Afternoons are a good time to catch up on some TV.4.The students have the XXX.5.He has the XXX.6.The young boy is XXX.7.The sun is visible in the sky。
can的练习题五年级Can的练习题(五年级)Can是英语中常用的情态动词之一,表示"能够"或"会"做某事。
它在日常生活和学习中都扮演着重要的角色。
下面将为大家提供一些针对五年级学生的Can练习题,帮助他们更好地掌握和运用Can。
练习题一:选择正确的答案填空1. A: ______ you swim?B: No, I can't.a) Do b) Can c) Are2. A: ______ he play the piano?B: Yes, he can.a) Do b) Can c) Is3. A: What ______ you do?B: I can dance.a) can b) do c) are4. A: ______ she cook?B: No, she can't.a) Do b) Can c) Is5. A: There is a big spider. ______ you catch it?B: No, I can't.a) Do b) Can c) Is练习题二:根据提供的情景回答问题1. A: The ball is too high. ______ you catch it?B: Yes, I can.2. A: ______ you speak Mandarin?B: No, I can't. But I can speak English.3. A: It's raining outside. ______ we go out to play?B: No, we can't. Let's stay indoors.4. A: The math problem is difficult. ______ you solve it? B: Yes, I can. I'll try my best.5. A: ______ the dog jump over the fence?B: Yes, it can. Dogs are good at jumping.练习题三:根据句意填入适当的can或can't1. I ______ play the guitar, but I ______ play the flute.2. They ______ swim, but they ______ climb trees.3. ______ your brother run fast?4. We ______ ride bicycles, but we ______ roller skate.5. She ______ sing beautifully, but she ______ dance.练习题四:从方框中选择适当的动词短语填空can paint can't draw can swim can't ride can cook1. David ______ very well. He won a swimming competition last month.2. Lucy ______, but she ______. She always helps her mom in the kitchen.3. Tim ______, but he ______. He falls off the bike every time.4. Kelly ______, but she ______. She's good at drawing and sketching.5. Mark ______, but he ______. He's really good at capturing beautiful scenes on canvas.练习题五:连词成句1. play, can, I, basketball.2. ride, your, bike, can, sister?3. speak, I, English, but, can't, French.4. tomatoes, grow, can, we, in, the, garden?5. can, my, dog, tricks, some, do.练习题六:短文填空根据短文内容,用can或can't填空。
can练习题小学一、选择题1. 我们______ play basketball in the park.A. canB. can'tC. doD. don't2. ______ you swim in the pool?A. CanB. Can'tC. DoD. Don't3. ______ they climb the mountain?A. CanB. Can'tC. DoD. Don't4. ______ he ride a bike?A. CanB. Can'tC. DoD. Don't5. Tom and Sarah _______ fly a kite.A. canB. can'tC. doD. don't二、根据上下文填入正确的词语A: Can Tim play the piano?B: Yes, he ______ play the piano very well. A: Can you ride a bike?B: No, I ______ ride a bike.A: Can I help you with your homework?B: No, I ________ do it by myself.A: Can cats swim?B: No, cats _______ swim.A: Can you play chess?B: Yes, I ______ play chess.三、按要求改写句子1. Amy can swim.(改为否定句)Amy _______ _______.2. They can ride bicycles.(改为一般疑问句)________ they _______ bicycles?3. My brother can jump high.(改为否定句)My brother _______ _______.4. Tim can run fast.(改为一般疑问句)_______ Tim run fast?5. We can speak English.(改为一般疑问句,作肯定回答)_______ you speak English? - Yes, _______ _______.四、连词成句1. can, Tom, swim (.)___________________2. play, basketball, we, can (.)___________________3. can, she, sing (.)___________________4. play, they, chess, can (.)___________________5. ride, bicycles, we, can (.)___________________答案:一、1. A 2. A 3. A 4. A 5. A二、1. can 2. can't 3. can't 4. can't 5. can三、1. can't swim 2. Can ride 3. can't jump high 4. Can 5. Can, we can四、1. Tom can swim. 2. We can play basketball. 3. She can sing. 4. They can play chess. 5. We can ride bicycles.。
can的练习题四年级Can的练习题(四年级)一、选择题1. — ______ you swim?— Yes, I ______.A. Do; doB. Can; canC. Can; can'tD. Do; can2. — Can you play the guitar?— ______.A. No, I canB. Yes, I can'tC. No, I can'tD. Yes, I can3. — ______ you run fast?— Yes, I ______.A. Can; canB. Can; can'tC. Do; canD. Do; do4. — ______ John sing?— No, he ______.A. Do; doesn'tB. Do; can'tC. Does; canD. Can; can5. — Can we ride bikes in the park?— No, we ______.A. can'tB. don'tC. aren'tD. won't二、根据问句选择正确的答句。
1. Can you speak French?A. Yes, I can.B. No, I can't.2. Can Sarah swim?A. Yes, she can.B. No, she can't.3. Can they run fast?A. Yes, they can.B. No, they can't.4. Can we play soccer?A. Yes, you can.B. No, you can't.5. Can Mr. Lee play the piano?A. Yes, he can.B. No, he can't.三、根据提示完成句子。
情态动词can一、单项选择题1.- Sandy , we need an actor for the action movie. you play kung fu-Sorry, I can’tA. MustB. MayC. ShouldD. Can2.You can play the guitar. Maybe you can our school concert.A. beB. joinsC. joinD. go3.- Can you play volleyball- .A.Yes, I amB. Yes, I doC. No, I can’tD. No, I don’t4. - you swim- ____, I can.A. Can ,NoB.Do , NotC. Can ,YesD. Must , Yes5. -___she play chess- No, she____.A. Can , can’tB. does, canC. Can, canD. Can’t can’t6. - What can you do-A. Yes, I canB. No, I can’tC. I can swimD. I like chess7. - Can Lucy and Alice dance- Yes , _______ .A. he canB. they canC. she canD. they can’t8. - Can we wear hats in school- .A. Yes, We can’tB. No, We canC. Yes, we canD. That’s right9. the little boy EnglishA. Do speakB. Does speakC. Can sayD. Can speak10. -Can we play basketball in the street- , you .A. Yes canB. Yes can’tC. No canD. No don’t11. -What can you see in the picture-I see some birds and two big trees in it.A. couldB. canC. needD. must12. - Can I go fishing with you,Dad- No, you _____.You ______stay at home and do your homework first.A.won't;mayB. shouldn't;oughtC. can't mustD.needn't; should13. - I can't stop smoking , doctor.- For your health, I'm afraid you ______.A.canB.can'tC.mustD.mustn't14. I ride a bike, but I drive car.’t can’t D. can’t can15. - ____________you swim- Yes,but I’m not a good swimmer.A. CanB. MayC. NeedD. Must答案:1.D 2.C 3.C 4.C 5.A 6.C 7.B 8.C 9.D 10.A 11.B 12.C 13.B 14.D 15.A二、汉译英1. 他会打篮球。
一.单项选择( )1、Can you play ____piano?A、aB、anC、the( )2、Can you dance? yes, I ____.A、doB、canC、can’t( )3、Can he write English? No,he ____A、canB、can’tC、does( )4、I __ ride a bike ,but I ____drive a car.A、can , canB、can’t , can’tC、can, can’t( )5、She can _____basketball .A、playB、playingC、plays( )6. — Can you speak Japanese?—No, I______.A. mustn’tB. can’tC. needn’tD. may not二.填空1.________you swim ? Yes, I can.2.Can your father play the piano ?No, he ________ .3. Can Lucy and Alice dance ?Yes , ________ can .三.完成句子1、贝蒂会说英语,但她不会说汉语。
Betty ________ _________ English,________she________ speak Chinese.2、你的朋友会骑马吗?—会。
________ your friends _______ _______ _______ ? Yes , _______ can.3、那个女孩不会打网球。
The girl _________ __________ tennis.4、托尼会游泳吗?——不会。
_________ Tony ________ ? No , he _________.5、他们会弹钢琴。
They ____________ ___________ the __________.四.按要求完成句子1、I can play baseball.(改为否定句)___________________________________________________________________ 2、3、Can your brother play the drums?(作肯定回答)___________________________________________________________________4、Lilei can speak French.(改为疑问句,并作否定回答)__________________________________________________________________ 5、6、They can sing the English song.(改为一般疑问句,并作肯定回答)__________________________________________________________________。