对于一些诸如石油化工、核能和军事类等项目,应该注重()。 ["以质量为中心","以进度为中心","以费用为中心","质量、进度、费用并重"]
图一和图二的A、B分别叫做什么?
电缆贯穿件是什么?
When does auxiliary burner of incinerator put into operation? () Ⅰ.tart incinerator when it is cold Ⅱ.he sludge for dealing with is little Ⅲ.he sludge for dealing with is large Ⅳ.he water and impurity in sludge are too much Ⅴ.he temperature in incinerator is low Ⅵ.ealing with little solid rubbish ["Ⅰ+Ⅱ+Ⅲ+Ⅴ","Ⅰ+Ⅱ+Ⅲ+Ⅳ","Ⅰ+Ⅳ+Ⅴ+Ⅵ","Ⅰ+Ⅱ+Ⅲ+Ⅵ"]
A thrust block is designed to(). ["absorb the shock of wave pressure at the bow","be placed between the engines and the foundation to absorb the vibration","transmit the thrust of the engine to the propeller","transmit the thrust of the propeller to the vessel"]
系统发生事故时,当值运行人员必须立即向调度汇报的主要内容是什么?