股票是投入股份公司的资本份额的证券化,属于资本证券()
参考答案:对
The old man used to live with his wife, but now he _____ alone after she died. [ ]
A. is used to live
B. gets used to living
C. used to live
D. is used for living
AMI发生时,cTn在血中开始升高的时间是()。
A.2~4小时
B.4~8小时
C.6~18小时
D.8~12小时
E.12~16小时