One of your crew members falls overboard from the starboard side. You should IMMEDIATELY（）.

A.apply left rudder

B.throw the crew member a life preserver

C.begin backing your engines

D.position your vessel to windward and begin recovery

总监代表按（）的授权，行使总监理工程师的部分职责和权力。

A.总监理工程师

B.监理单位法定代表人

C.建设单位

D.建设单位法定代表人