● （10） 是指系统或其组成部分能在其他系统中重复使用的特性。 （10）A．可扩充性 B．可移植性 C．可重

Why a gearbox is needed in a ship driven by a medium-speed diesel engine？ .

A.To reduce the main engine speed

B.To increase the main engine speed

C.To govern the main engine speed

D.To fix the propeller shaft

A.a single, long-stroke, slow-speed, turbocharged, two-stroke diesel engine

B.a single, long-stroke, medium-speed, turbocharged, four-stroke diesel engine

C.two medium-speed, turbocharged, four-stroke diesel engines

D.a variable-speed AC generator

An indication of an overloaded main propulsion diesel engine is().

A.white smoke in the exhaust

B.high exhaust gas pyrometer readings

C.sparks in the exhaust

D.blue smoke in the exhaust

If a main propulsion diesel engine hunts excessively at idle speed, you should ______.

A.adjusts the idle speed control

B.drain and flushes the governor and replace the oil

C.adjusts the compensating needle valve

D.drain and flushes the governor and replace the oil

A.Bed plate

B.Column

C.Entablature

D.Tie rod

A.governor droop

B.speeder spring tension

C.fuel rack lag

D.load on the engine

A.starting air pressure

B.scavenge air pressure

C.over-speed trip

D.banjo oiler line

A.cylinder heads

B.exhaust valves

C.scavenging air

D.injectors

A.dial indicator

B.outside caliper

C.bridge gauge

D.tram rod