An example of scope verification is（）

A.review the performance of an installed software module

B.managing changes to the project schedule

C.decomposing the WBS to a work package level

D.performing a benefit/cost analysis to determine if we should proceed with the project

拖拉机机油压力表的功用主要用于指示发动机运转时润滑系（）内的压力。

A.机油泵

B.机油散热器

C.主油道

D.油底壳