矿井主要通风机停止运转时，因通风机停风收到影响的地点，必须()，工作人员先撤到进风巷道中
A. 停止作业，停止机电设备运转
B. 停止作业，维持机电设备运转
C. 立即停止作业，切断电源
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The manager wore a____look after rrading the letter
A. disappointed
B. disappointinK
C. being disappointed
D. disappoint
灭菌后内镜及附件合格标准为()
A. 无菌
B. ＜10cfu/件
C. ＜5cfu/件
D. ＜2cfu/件
放射性废物固化/固定的安全监管应重视固化/固定工艺安全，避免()事故和其他工业事故的发生。
A. 燃爆
B. 机电
C. 气溶胶扩散
D. 以上三者均包含
Unless there is danger of further injury，a person with a compound fracture should not be moved until bleeding is controlled and ().
A. The bone has been set
B. The fracture is immobilized
C. Radio advice has been obtained
D. The wound has been washed
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