单项选择题

（） is arranged for cleaning the lubricating oil in the system and clean oil can be provided from a storage tank.

A.A filter
B.A centrifuge
C.A distiller
D.A generator

点击查看答案&解析

上一题目录下一题

单项选择题

A.Water energy
B.Electrical energy
C.Chemical energy
D.Heat energy

单项选择题

A.Constant inspection
B.Keeping constant load
C.Remaining constant temperature
D.varying speed

单项选择题

A.The crankshaft
B.The crankcase
C.The guide-ways
D.The frames