轮机英语单项选择题每日一练(2020.05.11)

单项选择题
Defective air cooler in a diesel engine will lead to （）.
A.smoky exhaust
B.starting failure
C.overload
D.over speed
单项选择题
The best tool to use for removing the carbon ridge at the top of an enginecylinder, prior to removing the piston, is to use（）
A.an electric grinder
B.a metal scraper
C.a reamer
D.a three-wing hone
单项选择题
Lube oil pumps taking suction from the sump of most small marine engines are usually （）.
A.of the diaphragm type
B.of the centrifugal type
C.of the positive displacement type
D.independently driven by electric motors
单项选择题
The type of gauge most commonly used to measure pressure is the （）.
A.bimetallic type
B.diaphragm type
C.bourdon tube type
D.resistance-temperature type
单项选择题
According to Regulations, a power driven auxiliary steering gear for a vessel capable of a 20 knot service speed, must be capable of producing a rudder movement at which of the minimum speeds listed below?（）
A.7 knots
B.10 knots
C.15 knots
D.20 knots