單項選擇題

（） is (are) not power supplied by main switchboard directly.

A.Steering gear and windlass
B.Navigation light and radio power panel
C.Navigation device power box
D.Daily fresh water pump

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單項選擇題

（）is power supplied by main switchboard directly not through sub-board.

A.Deck machinery
B.Little power load
C.Some important load
D.stationary submersible pump

單項選擇題

（）are located on the road panel of main switchboard.

A.Megohm meter, insulation light and synchroscope
B.Synchroscope, synchro light and megohm meter
C.Shore power switch, insulation light and synchroscope
D.Megohm meter, insulation light and shore power switch