单项选择题

In large marine diesel engines cylinder oils usually contain additives formulated to impart the （） to clean the rings and grooves.

A.inefficiency
B.oiliness
C.detergency
D.purity

点击查看答案&解析

上一题目录下一题

单项选择题

A.reciprocating pump
B.gear pump
C.centrifugal pump
D.vane pump

单项选择题

A.the cylinder
B.the crankshaft
C.the piston
D.the cross-head

单项选择题

A.the exhaust valves
B.the fuel valves
C.indicator cocks
D.the fuel pumps