单选题According to the Robinson Graph, suddenly astern maneuvering of main engine during navigating will cause（）Arapid reduction of ship’s friction forceBshaft system over mechanical loadCsharp growth of the torque of diesel engineDpropeller torque change along J=0 curve
单选题
According to the Robinson Graph, suddenly astern maneuvering of main engine during navigating will cause（）
A
rapid reduction of ship’s friction force
B
shaft system over mechanical load
C
sharp growth of the torque of diesel engine
D
propeller torque change along J=0 curve
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