A、NOT contain more than 200 pounds of CO
B、be automatically operated by a heat actuator
C、have an audible alarm
D、All of the above
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A、NOT contain more than 200 pounds of CO
B、be automatically operated by a heat actuator
C、have an audible alarm
D、All of the above
时间：2022-01-03 01:30 关键词： 消防演习与作业