下列哪类药物的处方保存3年备查
A.毒性药品
B.二类精神药品
C.麻醉药品
D.一类精神药品
E.非处方药
参考答案:C
根据句意,用所给词的适当形式填空。
1. He found many people ______________ (dance) there.
2. My idea is quite different from ____________ (she).
3. Pop music is ____________ (live) and good to dance to.
4. Sally is a classical ___________ (music).
5. The _____________ (translate) of English is very difficult to me.
纯电阻在交流电路中,电压与电流的相位关系是()的。