A.shaft
B.boss
C.wheel
D.lever
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A.higher
B.lower
C.very higher
D.very lower
A.A special sealing gland
B.Propeller
C.Tailshaft
D.Sterntube bearing
A.tie rod
B.thrust block
C.bedplate of main engine
D.frame of main engine
A.propeller
B.flying wheel
C.main engine
D.crankshaft
A.coke deposits
B.cylinder water temperature
C.asphalt in fuel oil
D.lub oil
最新試題
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Flame failure in an automatically fired auxiliary boiler can from a/an （）
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Thermostatic steam pressure reducing valves are used in the fuel oil service system to control the（）