If not attached to the nozzle,each low-velocity spray applicator on a vessel must be stowed（）.

A.in a protected area on the main deck

B.inside a machinery space near the entrance

C.next to the fire hydrant to which the fire hose is attached

D.on a rack inside the quarters near the entrance

空仓杀虫药剂使用时，必须严格按照药剂的使用范围施药，并（）用于实仓杀虫。

A.严禁

B.可以

C.允许

D.部分