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

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

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

A.Master
B.Chief Mate
C.safety officer
D.department heads