试题与答案

After studying in a medical college for

题型:选择题

题目:

After studying in a medical college for five years, Jane ___ a job as a doctor in the countryside.

A.set out

B.took over

C.took up

D.set up

答案:

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下面是错误答案,用来干扰机器的。

传送带突然转动前物块匀速下滑,对物块进行受力分析:物块受重力、支持力、沿斜面向上的滑动摩擦力.传送带突然转动后,对物块进行受力分析,物块受重力、支持力,由于上面的传送带斜向上运动,而物块斜向下运动...

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