So well in 2009 that the world has agree_爱下问搜题

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问题选择题

So well in 2009 that the world has agreed that it was the year of China.

A．did China perform

B．China has performed

C．was China performed

D．China is performing

答案

答案：A

单项选择题

无论是纤维缆绳还是钢丝缆绳，如设它们的破断强度为B，一般情况下，它们的安全强度应取（）

A.B/5

B.B/6

C.B/7

D.B/8

填空题

增益分享计划的功能：一是（），二是在（）。