单项选择题
Before wore is commenced（）the officer responsible should ensure that power is shut off and warning notices posted on the bridge and in the machinery spaces.
A.near the ship’s whistle
B.on the funnel
C.in the vicinity of radio aerials
D.near the radar scanner
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相关考题
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单项选择题
Personnel working aloft (above 2metres) should wear（）or other arresting device at all times.
A.a safety harness with lifeline
B.a safety net
C.a life buoy
D.buoyancy agarments -
单项选择题
（）should generally best for handing acids,alkalis,various types of oils,solvents and chemicals in general.
A.Heat-resistant gloves
B.Rubber gloves
C.PVC gloves
D.Leather gloves -
单项选择题
（）should generally be used when handing rough or sharp objects.
A.Heat-resistant
B.Rubber gloves
C.PVC gloves
D.Leather gloves
