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【单选题】
下列哪个是 S N 2 的反应特征:( )
A.
产物发生Walden转化
B.
动力学一级反应
C.
叔卤代烷反应速率大于伯卤代烷
D.
反应分步进行
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举一反三
【判断题】电路的基本组成是电源、负载、导线和开关（    ）
A.
正确
B.
错误
查看完整题目与答案
【单选题】一个完整的基本电路通常是由（）组成。
A.
电源、传输导线、控制电器和负载
B.
电源、导线、用电器
C.
变压器、电机、电缆
D.
开关、导线、负载
查看完整题目与答案
【判断题】电路是指电流所通过的途径，它由电源、负载、导线和开关等四个基本部分组成。
A.
正确
B.
错误
查看完整题目与答案
【单选题】Which of the following best summarizes the main information of the passage?
A.
High-tech helps locate many fascinating archeological sites.
B.
Without high-tech, the archeologist's work would come to a stop
C.
High-tech is has taken the place of shovels and picks.
D.
High-tech makes the archeologist's work more fruitful.
查看完整题目与答案
【单选题】积分集成运放电路反馈元件采用的是( )
A.
电感
B.
电阻
C.
电容
D.
三极管
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【判断题】[root@UP-TECH 01_hello]# ./hello的功能是 执行执行当前目录下 hello 程序
A.
正确
B.
错误
查看完整题目与答案
【单选题】一般电路都是由电源、负载、开关和（）四个基本部分组成的。
A.
用电器
B.
发动机
C.
连接导线
D.
各种设备
查看完整题目与答案
【单选题】积分集成运放电路反馈元件采用的是( )元件
A.
电阻
B.
电感
C.
电容
D.
二极管
查看完整题目与答案
【单选题】What was Joanna's opinion of the firm's slogan, 'H&G is your guarantee'?
A.
It was a bit outdated.
B.
It was not attractive compared with other companies'.
C.
It couldn't match with the company's innovative spirit.
查看完整题目与答案
【单选题】Which of the following best summarizes the main information of the passage?
A.
High-tech helps locate many fascinating archeological sites.
B.
Without high-tech, the archeologist's work would come to a stop.
C.
High-tech has taken the place of shovels and picks.
D.
High-tech makes the archeologist's work more fruitful.
查看完整题目与答案
相关题目：
【判断题】电路的基本组成是电源、负载、导线和开关（    ）
A.
正确
B.
错误
查看完整题目与答案
【单选题】一个完整的基本电路通常是由（）组成。
A.
电源、传输导线、控制电器和负载
B.
电源、导线、用电器
C.
变压器、电机、电缆
D.
开关、导线、负载
查看完整题目与答案
【判断题】电路是指电流所通过的途径，它由电源、负载、导线和开关等四个基本部分组成。
A.
正确
B.
错误
查看完整题目与答案
【单选题】Which of the following best summarizes the main information of the passage?
A.
High-tech helps locate many fascinating archeological sites.
B.
Without high-tech, the archeologist's work would come to a stop
C.
High-tech is has taken the place of shovels and picks.
D.
High-tech makes the archeologist's work more fruitful.
查看完整题目与答案
【单选题】积分集成运放电路反馈元件采用的是( )
A.
电感
B.
电阻
C.
电容
D.
三极管
查看完整题目与答案
【判断题】[root@UP-TECH 01_hello]# ./hello的功能是 执行执行当前目录下 hello 程序
A.
正确
B.
错误
查看完整题目与答案
【单选题】一般电路都是由电源、负载、开关和（）四个基本部分组成的。
A.
用电器
B.
发动机
C.
连接导线
D.
各种设备
查看完整题目与答案
【单选题】积分集成运放电路反馈元件采用的是( )元件
A.
电阻
B.
电感
C.
电容
D.
二极管
查看完整题目与答案
【单选题】What was Joanna's opinion of the firm's slogan, 'H&G is your guarantee'?
A.
It was a bit outdated.
B.
It was not attractive compared with other companies'.
C.
It couldn't match with the company's innovative spirit.
查看完整题目与答案
【单选题】Which of the following best summarizes the main information of the passage?
A.
High-tech helps locate many fascinating archeological sites.
B.
Without high-tech, the archeologist's work would come to a stop.
C.
High-tech has taken the place of shovels and picks.
D.
High-tech makes the archeologist's work more fruitful.
查看完整题目与答案