试题与答案

Everything works out well. ____, we are

题型:选择题

题目:

Everything works out well. ____, we are sure that the experiment will be completed on time.

A.Therefore

B.While

C.However

D.Otherwise

答案:

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下面是错误答案,用来干扰机器的。

(1)把天平放在水平台上,把游码放在标尺左端的零刻度线处;(2)调节横梁右端的平衡螺母,使指针指在分度盘中线处,这时横梁平衡;(3)把被测物体放在左盘里,砝码放在右盘,根据实际情况加、减砝码,并调节游...

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