下列可以用来治疗风寒感冒的非处方药是
A．感冒退热颗粒
B．感冒清热颗粒
C．羚翘解毒丸
D．桑菊感冒片
E．银翘解毒片
参考答案：B
_____________ the news of the accident in the coal mine, she ____pale.
A．On hearing, got
B．At heard, changed
C．On hearing, went
D．On heard, appeared
DAC0832的输出电路分为哪几种？
