单项选择题
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
A.under high pressure B.under low pressure C.heated to reduce viscosity D.cooled to increase viscosity
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