右半结肠痛的特点是
A.肿瘤多突出于肠腔,呈菜花状
B.腹泻、便秘交替出现
C.有便血,血与大便混合
D.腹部包块
E.较少肠梗阻
参考答案:A,B,C,D,E
关于七氟烷在麻醉中的作用,下列正确的是()。
A.无气味,对气道无刺激性
B.可产生七氟烷相关性肝炎
C.在碱石灰中可降解生成具有肾毒性的复合物A
D.因其血气分配系数较小,麻醉强度较大
E.在体内经肝代谢率大于2%
______ were impressed by his performance. [ ]
A. All the people present that day
B. That day all present people
C. All present people that day
D. All that day present people