If a better material had been used,the_of the part would have been increased.
题目
If a better material had been used,the_of the part would have been increased.
A.energy
B.force
C.strength
D.power
答案
C
强度
工程上的固定用法,没有为什么.
举一反三
我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
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