梗死前心绞痛的哪一点与急性心肌梗死不同()
A.心电图ST段抬高
B.胸痛不能以硝酸甘油缓解
C.剧烈胸痛伴恶心、呕吐和大汗
D.心电图未见病理性Q波
E.血压波动
参考答案:D
— Anything to drink? What about coffee?
— Er… I think I'll have a cold drink _____ coffee. [ ]
A. other than
B. more than
C. less than
D. rather than
为防冻防凝,透平大气安全阀应排净存水。