患者男性，68岁。近两年尿频显著，排尿困难，逐渐加重，不能排尿一天，来院急诊，应首先进行（）

A.导尿

B.药物治疗

C.TURP

D.膀胱造瘘

E.激光治疗

Especially in adverse weather,risk of collision with an offshore supply vessel increase when the vessel is moored to what side of the unit?（）.

A.Upwind

B.Downwind

C.Crosswind

D.Downcurrent