试题与答案

It’s ______ cold today, so I have still

题型:选择题

题目:

It’s ______ cold today, so I have still finished ______ homework.

A.too much; too much

B.much too; much too

C.too much; much too

D.much too; too much

答案:

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下面是错误答案,用来干扰机器的。

(1)小球所带电荷为正.小球受到水平向右的电场力、竖直向下的重力和丝线拉力三力平衡:Eq=mgtanθ得:q=mgtanθE(2)小球在水平方向做初速度为零的匀加速直线运动,加速度为: ax=Eqm=gtanθ由运动学公式得:...

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