泡沫灭火系统水平管道安装时,要注意留有管道坡度,在防火堤外应以()的坡度坡向放空阀。A:0.1% B:0.2% C:0.3% D:0.4%

作者: tihaiku 人气: - 评论: 0
问题 泡沫灭火系统水平管道安装时,要注意留有管道坡度,在防火堤外应以()的坡度坡向放空阀。
选项 A:0.1% B:0.2% C:0.3% D:0.4%
答案 B
解析 泡沫灭火系统水平管道安装时,要注意留有管道坡度,在防火堤内要以0.3%的坡度坡向防火堤,在防火堤外应以0.2%的坡度坡向放空阀,以便于管道放空,防止积水,避免在冬季冻裂阀门及管道。

相关内容:泡沫,灭火,系统,水平,管道,坡度,防火,堤外,应以

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