室内消火栓管道安装时,当管道壁厚≤4mm,直径≤50mm 时应采用( )。A.电焊 B.点焊 C.气焊 D.法兰连接

作者: rantiku 人气: - 评论: 0
问题 室内消火栓管道安装时,当管道壁厚≤4mm,直径≤50mm 时应采用( )。
选项 A.电焊 B.点焊 C.气焊 D.法兰连接
答案 C
解析

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