如图甲所示,A、B是一条电场线上的两点,若在某点释放一初速度为零的电子,电子仅受

题型:不定项选择

问题:

如图甲所示,A、B是一条电场线上的两点,若在某点释放一初速度为零的电子,电子仅受电场力作用,从A点运动到B点,其速度随时间变化的规律如图乙所示,则

[ ]

A.电子在A、B两点受的电场力FA<FB

B.A、B两点的电场强度EA>EB

C.场强方向为由A到B

D.A点的电势低于B点的电势

考点:电场强度的定义式电势
题型:不定项选择

任务型阅读。

     One day the sun and the wind had a quarrel (争吵). The sun said he was stronger than the wind. And

the wind said he was stronger than the sun. (1) 正在那时他们看到一个人在下面走着, with a hat and a

coat on. The sun said, "Let's see who can make the man take off his hat and coat. If you can do that more

quickly than I, then you are the stronger."

     "All right," said the wind, "I'll try first." So the wind began to blow. (2) But the harder he blew, the

tighter (紧的) the man held his hat and coat. The wind could not make him take them off. Then the sun

tried. It shone quietly. Soon the man (3) ________ his hat and wiped (擦) his forehead. The sun began

to shone a little brighter, and the man took off his coat. It shone harder still, and the man began to take

off his shirt. Then the wind said to the sun, "That's enough. You are stronger than I."

1. 将(1)处译成英语:

    ________________________________________________________________

2. 将(2)处译成汉语:

    ________________________________________________________________

3. 在(3)句的空白处填入适当的词组,使句意完整,上下文通顺:_________

4. 找出文中与下列句子意思相近的句子:

    If you can make the man take them off faster than I.

    _________________________________________________________________

5. 找出文中最能表达该短文主题的句子。

   __________________________________________________________________

题型:不定项选择

自首必须具备的条件是()。

A.犯罪分子所犯的是轻罪

B.犯罪后自动投案

C.如实交代自己的罪行

D.接受审查和裁判

题型:不定项选择

解释下列加粗的字词。

生所资____________          

⑵违己交病____________   

万物之得时____________

⑷川泽纡其骇瞩____________        

⑸穷睇眄于中天____________        

⑹不坠青云之志____________                  

奚以之九万里而南____________                  

⑻彼且恶乎哉____________          

⑼欲苟顺私情,则告诉不许____________                

⑽形影相____________            

⑾听臣微志,刘侥幸____________                  

才高八斗____________  

题型:不定项选择

()可以参加职工基本医疗保险,由个人按照国家规定缴纳基本医疗保险费

A.有雇工的个体工商户

B.无雇工的个体工商户

C.城镇居民

D.农村居民

题型:不定项选择

三角形连接的三相对称交流电路有以下特点()。

A、线电压等于相电压

B、线电流等于相电流

C、各相负载电压大小相等,相位互差120°

D、线电流大小相等且相位互差120°

E、线电流必等于相电流的倍

更多题库