HACCP并不是一个零风险的体系，只是可以尽量减少食品安全危害的风险。
参考答案：对
— Were you at home at 8:00 last night? I called you but nobody answered.
— Sorry, I a nap at that time.
A．take
B．took
C．was taking
D．am taking
剧毒药及麻醉药的最主要保管原则是
A．药名用中、外文对照B．应加锁并专人负责C．装密封瓶中保存D．于阴凉处存放E．与内服药分别放置
