当前位置：文档之家 › 3.3xin

3.3xin

  • 格式：docx
  • 大小：19.71 KB
  • 文档页数：4
课题
Unit3
课时
3
课型
新课
教师复备栏或学生笔记栏
备课教师
王巧艳
使用人
王巧艳
时间
4.16
学习内容
Let’s spell in Section A.
学习目标
1.感知并掌握字母组合“ch”、“sh”在单词中的发音规则。
2.能够拼读相关的例词。能独立完成listen, number and say; Choose ,write and say两部分的练习。
1、让学生用所给词汇写话。teacher fishshirt chicken
short fresh nice cheap
2.Choose, write and say.
课
堂
检
测
1.Let’s read.
(1)fish wish (2) much such (3) plant chant
（4）Peach beach
重点难点
掌握字母组合“ch”、“sh”在单词中的发音规则。能够拼读相关的例词。
课前准备
教师:导学案课件
预习导学
1.Let’schant.
When is your birthday?
When is your birthday?
January or February, raise your hand.
March or April, touchyour nose.
May or June，touch your ears.
July or August, stamp your foot.
September or October, show me yourwatch.
November or December, clap 1,2,3.

探究活动（一）
板
书
设
计
Unit3 My school calendar
ch teacherchickenlunchchina
sh [ʃ] fishshirtshortssheep
教学
反思
2. Let’s find
school Christmassandwich which
3.字母组合的读音规则：
盘点
收获
五年级英语导学案
作业
布置
1.Copy the sentences and the words 3 times for SB.
2.Writing .for SA.(EX.ⅪP32优化设计)
Find and group.(找一找，把所给单词根据组成特征分成两类)
teacher fish chair sheep watch shirt peach wish
Chinese China wash sandwich children short finish
shopping fresh
探究活动（二）

合集下载

三星 S3C7031 7032 说明书

三星 S3C7031 7032 说明书

Up to 15 pins of the 20-pin DIP or 20-pin SOP package can be dedicated to I/O. Pull-up resistors are assignable to all of the pins by software. Four vectored interrupts provide fast response to internal and external events.
Flags
Data Memory (2)
Program Memory (1)
I/O Port 0
8-Bit Timer/ Counter
Comparator
I/O Port 1
P0.0/CLO P0.1/TIO P0.2/INT1
P0.0/KS0/CIN0 P0.1/KS1/CIN1 P0.2/KS2/CIN2 P0.3/KS3/CIN3
The Samsung Microcontroller Development System, SMDS, provides you with a complete PC-based development environment for KS57-series microcontrollers that is powerful, reliable, and portable. In addition to its easy to use window-oriented program development structure, the SMDS toolset includes versatile debugging, trace, instruction timing, and performance measurement applications.
rinex 3.03格式说明

rinex 3.03格式说明


RINEX Version 3.03 ii
5.7 Signal strength .................................................................................................................................. 22 Table 12: Standardized S/N Indicators ............................................................................................... 22 5.8 Date/time format in the PGM / RUN BY / DATE header record ..................................................... 22 5.9 Antenna phase center header record ................................................................................................. 23 5.10 Antenna orientation ......................................................................................................................... 23 5.11 Observation data records................................................................................................................. 23 Table 13: Example Observation Type Records .................................................................................. 23 Table 14: Example Observation Data Records ................................................................................... 23 5.12 Ionosphere delay as pseudo-observables ........................................................................................ 24 Table 15: Ionosphere Pseudo-Observable Coding .............................................................................. 24 Table 16: Ionosphere Pseudo-Observable Corrections to Observations ............................................. 24 5.13 Channel numbers as pseudo-observables ........................................................................................ 24 5.14 Corrections of differential code biases (DCBs) .............................................................................. 25 5.15 Corrections of antenna phase center variations (PCVs) .................................................................. 25 5.16 Navigation message files ................................................................................................................ 25 Table 17: Example of Navigation File Satellite System and Number Definition Record .................. 25 Table 18: Example of Navigation File Header IONOSPHERIC CORR Record ................................ 25 6. ADDITIONAL HINTS AND TIPS ........................................................................................................ 26 6.1 Versions ............................................................................................................................................ 26 6.2 Leading blanks in CHARACTER fields ........................................................................................... 26 6.3 Variable-length records ..................................................................................................................... 26 6.4 Blank fields ....................................................................................................................................... 26 6.5 Order of the header records, order of data records............................................................................ 26 6.6 Missing items, duration of the validity of values .............................................................................. 27 6.7 Unknown / Undefined observation types and header records ........................................................... 27 6.8 Event flag records ............................................................................................................................. 27 6.9 Receiver clock offset......................................................................................................................... 27 6.10 Two-digit years ............................................................................................................................... 27 6.11 Fit interval (GPS navigation message file) ..................................................................................... 28 6.12 Satellite health (GPS navigation message file) ............................................................................... 28 Table 19: Description of GPS Satellite Health Field .......................................................................... 28 6.13 Transmission time of message (GPS navigation message file)..........................................5
3.3.2去分母2,3xin

3.3.2去分母2,3xin


2.用各分母的最小公倍数乘方程的两边时，不要遗漏方程中不 含分母的项. 3.去掉分母后，分数线也同时去掉，分子上的多项式要用括号 括起来(分数线有括号的作用). 4.若分子或分母中有小数时，一般先用分数的基本性质把分子
或分母中的小数化为整数，再去分母.
知识点 2 有分数系数的一元一次方程应用题 【例2】(2012·河北中考改编)如 图，某市A，B两地之间有两条公 路，一条是市区公路AB，另一条 是外环公路AD－DC－CB.其中AD=BC，AB∶AD∶DC＝10∶5∶2. 某人驾车从A地出发，沿市区公路去B地，平均速度是40 km/h.
3.3.2去分母
每 合并 去括号 移项 系数化为1 , 请你解下列题目，比一比谁快 一 同类项 步 （1）12（x+1）= -（3x-1) 的 解:去括号,得 12x+12=-3x+1 依 据 移项,得 12x+3x=1-12 是 什 合并,得 15x=-11 么 11 系数化为1,得x= 15 ?
3
【思考】1.方程 1
提示：_________.
1 1 1 的系数有什么特点？ x x 11 x中的 x， x 2 3 2 3
都是分数 2.根据等式的性质2，方程两边同乘什么数(非0)可使上面方
程各项系数都化为整数？并写出变形后的方程.
提示：方程两边同乘____________________，变形后的方程
返回时沿外环公路行驶，平均速度是80 km/h，结果比去时少
用了 求市区公路的长.
1 h， 10
【解题探究】1.由AB∶AD∶DC=10∶5∶2，若设AB的长为
10x km，应如何用未知数表示出AD和DC.
提示：AD=5x km,DC=2x km.
PLC课程设计实验报告

PLC课程设计实验报告

可编程控制器原理与实践课程设计实验报告姓名：杨益伟班级：自动化1202学号：120900321指导教师：张义红2014年11月东华大学信息科学与技术学院目录一、PLC课程设计目的及要求----------------------3二、PLC的技术特点及应用------------------------3三、课程设计内容--------------------------------53.1智能抢答器系统-----------------------------53.1.1控制要求3.1.2I/O编址，梯形图及运行过程分析3.1.3PLC硬件连接图3.1.4总结与体会3.2自动交通灯系统----------------------------93.2.1控制要求3.2.2I/O编址，梯形图及运行过程分析3.2.3PLC硬件连接图3.2.4总结与体会3.3小球分拣器系统----------------------------153.3.1控制要求3.3.2I/O编址，梯形图及运行过程分析3.3.3PLC硬件连接图3.3.4总结与体会3.4电梯模型----------------------------------193.4.1控制要求3.4.2I/O编址，梯形图及运行过程分析3.4.3PLC硬件连接图3.4.4总结与体会一、PLC课程设计目的及要求课程设计目的：（1）通过对实际的PLC控制系统的编程训练，提高分析问题、解决问题的能力；（2）熟悉工业生产中PLC的应用和系统构成，了解PLC控制的电路的设计方法。

（3）通过本次课程设计增进实际动手能力的培养。

（4）用PLC实现工件加工模型，四层电梯模型的运动控制和模拟系统的程序设计，掌握编程的一般方法和技巧。

课程设计要求：（1）理解实际系统的运动过程，分解动作过程使之容易编程。

（2）列写PLC控制系统的I/O配置。

（3）画出硬件电路图，实现PLC与控制装置的连线。