已知当抛物线型拱桥的顶点距水面2米时,量得水面宽8米.当水面升高1米后,水面宽度是 ( )米.
— Robert is indeed a wise man.
— Oh, yes. How often I have regretted _____ his advice! [ ]
A. to take
B. taking
C. not to take
D. not taking
男性,60岁,数小时来胸痛、恶心。查体:心界不大,心率80次/分,可闻及S,心前区闻及心包摩擦音。心电图示QRSv1~5呈QS型,ST段抬高,T波倒置。CPK600U/L,PK-MB30U/L。最可能的诊断是()
A.急性非特异性心包炎
B.急性病毒性心肌炎
C.急性心肌梗死
D.感染性心内膜炎
E.肺栓塞