急性心肌梗死发作后CTnT开始升高的时间为( )
A．1小时B．2～4小时C．4～8小时D．8～12小时E．0.5小时
参考答案：C
--- Have you moved into the new house?
--- Not yet. The walls ______.
A．were painted
B．were being painted
C．are painted
D．are being painted
铁碳合金状态图上的共析线是（）
A、ECF线
B、ACD线
C、PSK线
