肠梗阻解除的标志是()
A.腹痛减轻
B.呕吐减少
C.腹胀消失
D.肛门排气排便
E.无气过水声
参考答案:D
There _____ no hospitals in my town sixty years ago. [ ]
A. is
B. was
C. are
D. were
新发的或是原有劳力性心绞痛恶化加重,发作时ST段下移≤1mm,持续时间<20分钟,临床称()
A.重度组
B.高危组
C.低危组
D.轻度组
E.中危组