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下列有关安全监控系统分站的主要技术指标要求,叙述正确的是()

A、电网停电后,备用电源连续工作时间不应小于48h
B、传感器及执行器至分站之间的最大传输距离应不小于3km
C、分站所能接入的传感器、执行器的数量宜在2、4、8、16、32、64、128中选取
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正确答案:

C

答案解析:

暂无解析

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