相邻两组红外光束感烟探测器的水平距离不应大于( )。A.1Om; B.12m;

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问题 相邻两组红外光束感烟探测器的水平距离不应大于( )。A.1Om; B.12m; C.14m, D.16m.

选项 A.1Om; B.12m; C.14m, D.16m.

答案 C

解析
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