A.fluctuates with the engine speed to some extent, independent of the engine speed
B.keeps constant at all engine speed, dependent on the engine speed to some extent
C.keeps constant at all engine speed, independent of the engine speed
D.is decided by the engine speed, constant at all engine speed
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A.for FP, once fitted, the position of the blades can also be changed in operation
B.for CP, once fitted, the position of the blades can also be changed in operation
C.the CP type has a relatively smaller hub compared with the FP propellers
D.the FP type has a relatively larger hub compared with the CP propellers
A.shaft
B.boss
C.wheel
D.lever
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
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