试题与答案

在增压器运转中清洗压气机,应在清洗前后20min内,气缸润滑油供应量提高()。A.5

题型:单项选择题

题目:

在增压器运转中清洗压气机,应在清洗前后20min内,气缸润滑油供应量提高()。

A.50%~100%

B.70%~90%

C.40%~70%

D.50%~80%

答案:

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参考答案:桥梁工程项目施工成本管理的要求是: (1)成本最低化原则; (2)全面成本管理原则; (3)成本责任制原则; (4)成本管理有效化原则; (5)成本管理科学化原则。

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