非处方药又称为柜台发售药，所以世界各国把非处方药简称
A．一般医用药B．大众药C．OTCD．TPNE．公众药
参考答案：C
— I bought a very beautiful postcard for Teachers' Day.
— Really? When _____ you _____ it?
[ ]
A. do; buy
B. will; buy
C. did; buy
D. did; bought
乳化液泵出现下列（）情况的，应立即停泵。
A.异声异味
B.温度超过规定
C.压力表指示压力不正常
D.乳化液温度超过规定
