关于氯气气体特性描述正确的是（）

A.是一种无色带刺激性气味的气体

B.剧毒气体

C.强氧化剂

D.极度危害气体

When transferring survivors from an enclosed lifeboat to a rescue vessel，personnel on board the boat should（）.

A.remove their life preservers to make it easier to climb on board the rescue vessel

B.climb on top of the boat while waiting for their turn to transfer to the rescue vessel

C.remain seated inside and make the transfer one person at a time

D.enter the water and swim over to the rescue vessel