蛇串疮有水疱伴有坏死者宜选用何种剂型治疗:()
A.鲜马齿苋、玉簪叶捣烂外敷
B.四黄膏、青黛膏外涂
C.九一丹
D.补骨脂酊剂
E.樟脑膏
参考答案:C
You __ drive your car so fast. It's very dangerous.
A.wouldn't
B.shouldn't
C.couldn't
D.mightn't
对于长度为n的线性表,在最坏情况下,下列各排序法所对应的比较次数中正确的是 ( )。
A.冒泡排序为n/2
B.冒泡排序为n
C.快速排序为n
D.快速排序为n(n-1)/2