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【单项选择题】

According to the Robinson Graph, suddenly astern maneuvering of main engine during navigating will cause()

A、A.rapid reduction of ship’s friction force

B、B.shaft system over mechanical load

C、C.sharp growth of the torque of diesel engine

D、D.propeller torque change along J=0 curve

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第6题

A、be treated according to the C-Es command exactly  B、be treated according to MARPOL  C、accumulate in bilges or on tank tops in accordance with MARPOL  D、discharge to sea at the specified areas  

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第8题

A、they are used  B、the field windings are connected to the load  C、the armature circuit is connected to the load  D、the field windings are connected to the armature circuit  

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