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问题 单项选择题

在网络计划工期优化过程中，当出现两条独立的关键线路时，在考虑对质量、安全影响的基础上，优先选择的压缩对象应是这两条关键线路上( )的工作组合。

A．资源消耗量之和最小
B．直接费用率之和最小
C．持续时间之和最长
D．间接费用率之和最小

答案

参考答案：B

翻译题

Books are out best friends. They give us both knowledge and pleasure. With books, our life is interesting.84．Books are so great friends of ours that we can turn to them for help whenever we meet with difficulty.

However, we should make use of books. As there are bond of different kinds, we should read them in different ways.．In my opinion, some books are to be read carefully and we must think over and learn something from them. Some should be just looked through. There are a few books that we should never read, for they are not good for us.85．The most important thing that we must try to put what we learn from books to practice.
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单项选择题

肱三头肌()

A．仅作用于肘关节

B．受腋神经支配

C．内侧头起自桡神经沟下方的骨面

D．长头起自肩胛骨关节盂的上方

E．其肌腱止于尺骨的冠突
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