單項選擇題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


您可能感興趣的試卷

你可能感興趣的試題

1.單項選擇題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

2.單項選擇題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

4.單項選擇題An inflatable liferaft is thrown into the water from a sinking vessel. What occurs automatically after the painter trips the CO2 bottles to inflate the raft?（）

A.The sea anchor deploys
B.The floor inflates
C.If upside down，the craft rights itself
D.The painter detaches from the raft

5.單項選擇題You hear the general alarm and ship’s whistle sound for over 10 seconds. Traditionally，this is the signal for（）.

A.abandon ship
B.dismissal from fire and emergency stations
C.fire and emergency
D.man overboard