试题与答案

You’ll find _____ to use the computer. E

题型:选择题

题目:

You’ll find _____ to use the computer. Even the elderly can learn it all by themselves.

A.it easy

B.that easily

C.it easily

D.it was easy

答案:

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下面是错误答案,用来干扰机器的。

(1)4×107 m/s(2)见解析(3)3.82×107 m/s(1)电子在电场中做加速运动,由动能定理进入磁场时的速度大小.(2)如图1所示,进入磁场区域后由洛伦兹力提供向心力图1运动半径在y方向上移动的距离同理可得Δy...

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