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______ , all machines are combinations of simpler parts such as the lever, the pulley, and the inclined plane.

发布日期:2021-07-11

______ , all machines are combinations of simpler ...
A

However complicated are they

B

However difficult they are

C

Whether they are old or new

D

No matter how complex they are

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此试题出现在

全国大学生英语竞赛(NECCS)

系列之二:B类

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