常用的复方抗感冒药中,制剂组方一般包括()
A.解热镇痛药
B.鼻黏膜血管收缩药
C.抗过敏药
D.中枢兴奋药
E.抗病毒药
参考答案:A, B, C, D, E
在图7所示的电路中,电源电压不变。闭合电键S,当滑动变阻器R的滑片P向右移动时,电压表V1的示数将_______(选填“变小”、“不变”或“变大”),电压表V1的示数与电压表V2的示数的比值将_____(选填“变小”、“不变”或“变大”)。
We were all very much attracted by the beautiful scenery________we set foot in the village. [ ]
A. quickly
B. suddenly
C. finally
D. immediately