Before work is commenced（）,the officer responsible should inform the duty en-gineer to ensure that steps are taken to reduce as far as practicable the emission of steam, harmful gases and fumes.

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

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

单项选择题Long hair should always be covered by（）when working with or near moving machinery.

A.a helment
B.safety cap
C.an ear plug
D.face mask