Not only _____________ vital for reducing fever, but __________ also other things that it can help with.

A．aspirin has proved, are there

B．has aspirin proved, there are

C．has proved aspirin, are there

D．aspirin had proved, there are

工程网络计划资源优化的目的之—是为了寻求（）。

A．资源均衡利用条件下的最短工期安排

B．最优工期条件下的资源均衡利用方案

C．工期固定条件下的资源均衡利用方案

D．工程总费用最低时的资源利用方案