— I'd like to book a room for tonight.

— Sorry, sir, but we don't have any rooms _____ at the moment. [ ]

A. available

B. usable

C. suitable

D. comfortable

肺动脉高压的X线表现错误的是（）

A.肺动脉段膨隆超过3mm

B.右下肺动脉增宽超过15mm

C.有心室增大

D.左心房增大

E.周围动脉分支骤然转为纤细