下述哪些是缩窄性心包炎的体征()
A.Kussmaul征
B.肝肿大,肝颈静脉回流征阳性
C.Ewart征
D.心包叩击音
E.腹腔积液征
参考答案:A, B, D, E
It was just a ______ remark - I wasn't really serious.[ ]
A. usual
B. casual
C. formal
D. normal
单轨吊最大有效载荷()吨。