用氯胺酮单独静脉麻醉后，临床常出现苏醒期谵妄或梦幻，能够预防此现象的药物是（）。
A.咪哒唑仑
B.吗啡
C.纳洛酮
D.新斯的明
E.阿托品
参考答案：A
小明x岁，小华比小明的岁数大5岁，则小华______岁．
General, Inc. , has net income of $ 650000 and one million shares outstanding. The profit margin is 6 percent and General, Inc. , is selling for $ 30.00. The price/sales ratio is equal to:
A. 2.77. B. 10.83. C. 0.06.
