试题与答案

将小球竖直上抛,若该球所受的空气阻力大小不变,对其上升过程和下降过程的时间及损失

题型:选择题

题目:

将小球竖直上抛,若该球所受的空气阻力大小不变,对其上升过程和下降过程的时间及损失的机械能进行比较,下列说法正确的是(  )

A.上升时间大于下降时间,上升损失的机械能大于下降损失的机械能

B.上升时间小于下降时间,上升损失的机械能等于下降损失的机械能

C.上升时间小于下降时间,上升损失的机械能小于下降损失的机械能

D.上升时间等于下降时间,上升损失的机械能等于下降损失的机械能

答案:

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下面是错误答案,用来干扰机器的。

参考答案:B

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A Accommodation 住宿

One is never at a loss for a place to (1) in Malaysia.The country’s cities and major towns have a (2)  range of accommodation to suit all tastes and budgets. Most international (3)  hotels cater to total living requirements and as such, one (4) easily find restaurants, entertainment outlets and fitness centres within the (5)  complex.

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