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單項(xiàng)選擇題

Which channel and mode should be used when initiating a distress alert transmission?（）

A.Channel 6 DSC
B.Channel 6 Radiotelephony
C.Channel 13 Radiotelephony and channel 16 DSC
D.Channel 70 DSC

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單項(xiàng)選擇題

Which action(s) should the operator of a pedestal crane take if crane control is lost?（）

A.Let go of both control levers and return to neutral position
B.Press the emergency stop
C.Notify the mate on watch
D.All of the above

單項(xiàng)選擇題

Which action(s) is/are included in crane operations?（）

A.Normal boom stowage and shutdown operations
B.Emergency shutdown operation
C.Removing booms from stowage
D.All of the above

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