单项选择题

The ability of the governor to prevent fluctuations in engine speed is termed （）.

A.sensitivity
B.stability
C.promptness
D.speed droop

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单项选择题

What is the function of the thrust bearing?（）

A.Prevents lateral movement of the slow speed gear
B.Transmits propeller thrust to the hull
C.Keeps spring bearings in line
D.Prevents main reduction gear axial movement

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Lube oil filters remove contaminants more efficiently if the oil being filtered is （）.

A.under high pressure
B.under low pressure
C.heated to reduce viscosity
D.cooled to increase viscosity

单项选择题

Proper filtering and straining of fuel oil is important because the （）.

A.fuel oil pump will over-speed if dirt is not removed
B.fuel oil transfer pumps cannot tolerate small amounts of dirt in the oil
C.fuel injectors may be damaged by foreign particles in the fuel oil
D.dirty fuel will clog the intake air filter