不宜作为检测非心脏病人手术期有无AMI的指标是（）
A.CK
B.LD
C.cTn
D.Mb
E.AST
参考答案：A, B, D, E
Several professors from Peking University came to visit our school, to my surprise, one of ________ was my aunt.
A．them
B．those
C．which
D．whom
检修中遇有那些情况应填用二次工作安全措施票？
