单项选择题
Which of the following can be obtained by means of an indicator card?（）
A.the peak pressure in a cylinder
B.the temperature of the cooling water
C.the fuel consumption
D.none of the above
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The lower section of a piston is called the （）.
A.land
B.skirt
C.crown
D.plate -
单项选择题
To correct a hunting problem in a main propulsion diesel engine hydraulic governor, you should （）.
A.increase the governor oil pressure
B.adjust the speed droop setting
C.adjust the speeder spring travel
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单项选择题
The （） engine is used for alternators and sometimes for main propulsion with a gearbox to provide a propeller of between 90 to 120 rpm.
A.four-stroke
B.two-stroke
C.slow speed
D.reversible
