A、To replace a damaged life preserver
B、For use during fire drills
C、For use during boat drills
D、At no time
更多“On a ship，when may a work vest be substituted for a required life preserver?（）”相关的问题
A、To replace a damaged life preserver B、For use during fire drills C、For use during boat drills D、At no time
A、On board national flags should be hoisted when the sun sets. B、On board national flags should be hoisted when the sun rises. C、On board national flags should be lowered when the ship is in port. D、On board national flags should be hoisted flag when loading and discharging
A、when will our ship sail B、will when our ship sail C、when our ship will sail D、will our ship when sail
A、A.Bow to the sea and no way on your vessel B、B.Sea on the lee quarter with ship moving ahead slowly C、C.Sea on the weather bow and ship moving ahead slowly D、D.Sea on the quarter with sternway on the ship
A、between ship stations and shore-based communication networks B、concern the management and operation of ships C、may have an impact of the safety on ships D、all of A, B, C
A、A.Toxic gasses may be present B、B.Flammable gasses may be present C、C.Liquid muds may flood adjoining spaces D、D.An oxygen-deficient atmosphere may be present
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