独头巷道发生火灾时,要()
A.在维持局部通风机正常通风的情况下,积极灭火
B.立即停止局部通风杨的运转,积极灭火
参考答案:A
21.Bob got seriously injured in the traffic accident, but luckily, the doctor came __________to save his life.
A.in time
B.on time
C.at times
D.at last
关于应用胰岛素的注意事项,叙述正确的有()
A.胰岛素宜冰冻保存
B.抽吸药液时避免震荡
C.皮下注射部位经常更换
D.混合注射时先抽吸正规胰岛素
E.应用时注意药物有效期