A controllable pitch propeller on a diesel driven vessel eliminates the need forA.friction clutchesB.disconnect clutchesC.reversing gearsD.reduction gears
A controllable pitch propeller on a diesel driven vessel eliminates the need for
A.friction clutches
B.disconnect clutches
C.reversing gears
D.reduction gears
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单元宽度超过整数个pitch单元（比如N个）一点，但又不到N+1个，那么还是要调用N+1个pitch单元