6332某通信机房设置七氟丙烷灭火系统,该系统应有()种启动方式A.1B.2C.3D.42184

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某通信机房设置七氟丙烷灭火系统,该系统应有()种启动方式 A.1 B.2 C.3 D.4 请帮忙给出正确答案和分析,谢谢!
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