To become an officer on board, you must obtain（）.

A.an officer's license

B.an officer's promotion

C.an officer's statement

D.a seaman's book

治疗水肿风水泛滥证，应首选（）

A．越婢加术汤 

B．麻黄连翘赤小豆汤合五味消毒饮 

C．五皮饮合胃苓汤 

D．实脾饮 

E．疏凿饮子