單項(xiàng)選擇題
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
A.low lube oil temperature B.high ambient air temperature C.low tube oil pressure D.high exhaust system back pressure
A.the type and size of the engine B.the condition of the engine C.ambient temperature D.all of the above
A.it has a longer power stroke B.more air gets into the cylinder each stroke C.it develops twice as many power strokes at the same speed D.higher combustion pressure is developed
A.viscosity is too low B.temperature is too low C.pump discharge pressure is higher than the systems pressure D.pump capacity is greater than the systems needs
A.they must be located at the after end of the engine B.they can only be used with one engine at a time C.they eliminate the need for controllable pitch propellers D.they are connected to the engine with a flexible coupling
A.excessive fuel penetration B.prolonged injection lag C.reduced ignition lag D.prolonged ignition lag
A.control axial movement of the crankshaft B.transmit engine thrust to the propeller shaft C.absorb vibrations in the propeller shafting D.prevent propeller thrust from being transmitted to the hul
A.wheelhouse control station B.engine room control station C.captains office D.chief engineers office
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