单项选择题
A.pitch B.sway C.heave D.roll
The time required to incline from bow down to stern dow...
单项选择题The time required to incline from bow down to stern down and return to bow down again is called（）.
A.rolling period B.amplitude moment C.inclining moment D.pitching period
The principal action in changing from transit to surviv...
单项选择题The principal action in changing from transit to survival draft in the event heavy weather threatens is（）.
A.ballasting B.deballasting C.disconnecting D.hanging off
The preferred method of controlling external bleeding i...
单项选择题The preferred method of controlling external bleeding is by（）.
A.direct pressure on the wound B.elevating the wounded area C.pressure on a pressure point D.a tourniquet above the wound
