对于几个不会同时着火的相邻防护区或保护对象，可采用（）。

A.单元独立气体灭火系统

B.组合分配气体灭火系统

C.管网气体灭火系统

D.无管网气体灭火系统

The Master shall insure that the Emergency Position Indicating Radiobeacon (EPIRB) is（）.

A.secured inside the wheelhouse

B.tested annually

C.tested monthly

D.secured in the emergency locker