單項(xiàng)選擇題

The outlet at a fire hydrant may be positioned anywhere from horizontal to pointing（）.

A.45°upward
B.vertically upward
C.vertically downward
D.all of the above

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單項(xiàng)選擇題

The muster list shows each rig hand’s muster station，his duties during abandonment，basic instructions，and（）.

A.all emergency signals
B.instructions for lowering the survival craft
C.the time each weekly drill will be held
D.work schedule

單項(xiàng)選擇題

Small oil spills on deck can be kept from going overboard by（）.

A.driving wooden plugs into the vents
B.closing the lids on the vents
C.plugging the scuppers
D.plugging the sounding pipes