轮机英语船舶动力装置单项选择题每日一练(2019.01.24)

单项选择题
The cooling liquid used for the cylinder may be referred to as （）.
A.jacket water
B.make-up water
C.boiler water
D.flushing water
单项选择题
A large change in ambient temperature, or using an oil of a viscosity different from the one recommended by the manufacturer in a mechanical hydraulic governor, will result in the need to adjust the （）.
A.pilot valve opening
B.compensating needle valve
C.compensating spring tension
D.accumulator spring tension
单项选择题
The external circumference of a pair of main bearing shells is slightly larger than that of the bore of the housing which receives themThe difference is termed （）.
A.nip
B.nap
C.gap
D.lip
单项选择题
（） the cylinder will contain a great weight of air and will be capable of burning a great quantity of fuel.
A.At the beginning of the compression stroke
B.At the beginning of the suction stroke
C.At the end of the working stroke
D.At the end of the exhaust stroke
单项选择题
Sea water is not directly used as a coolant for engines because of its （）.
A.low specific heat
B.corrosive action
C.high expense
D.acid property