二类精神药品每张处方发药量使用不得超过()
A.药品
B.药品的特殊性
C.药品标准制定原则
D.药品质量
E.药品标准
参考答案:A
Smoking is not allowed in the workplace because the air must be ____________. [ ]
A. keep clean
B. kept cleaning
C. kept clean
D. kept to clean
胆道蛔虫症的手术指征。