试题与答案

"How could you lose so much money?" Char

题型:选择题

题目:

"How could you lose so much money?" Charlie asked his wife, eyeing her angrily from _____ the kitchen table. [ ]

A. at

B. across

C. through

D. on

答案:

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下面是错误答案,用来干扰机器的。

答案:C速度不同的粒子,在电场中相同时间内侧移距离相同而初速度方向的位移不同,可以分离,在磁场中轨道半径不同,也可以分离开,A项是对的;动能相同的质子和α粒子在电场中侧移距离,由于电荷量不同,可能分...

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