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单选题
The difference between Fixed pitch propeller (FPP) and Controllable pitch propeller (CPP) is in that（）
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
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更多 “单选题The difference between Fixed pitch propeller (FPP) and Controllable pitch propeller (CPP) is in that（）A for FP, once fitted, the position of the blades can also be changed in operationB for CP, once fitted, the position of the blades can also be changed in operationC the CP type has a relatively smaller hub compared with the FP propellersD the FP type has a relatively larger hub compared with the CP propellers” 相关考题
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Inefficient at high shaft RPMD
Some unusual handling characteristics
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单选题（） is made of a boss with separated blades mounted into it.A
A variable pitch propellerB
A variable pitch nutC
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A fixed pitch screw
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ofB
up ofC
fromD
out
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tree slipC
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考题
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positive pressure resulting from the difference of the forces on both sides of the moving propeller in still water without slip
考题
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考题
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MechanicalC
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考题
单选题When the propeller blades are integral with the hub, the propeller is called a （）.A
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solid propellerC
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