【单选题】
The （）(排水孔) is a deck drain.
A、jackstaff
B、bilge bracket
C、scupper
D、ensign
查看正确答案A、钢管构架应有排水孔，且排水孔应畅通 B、排水孔应尽量做得更大 C、应在距基础保护帽10cm处开Φ1cm的排水孔 D、排水孔下方钢管内部应浇筑水泥，防止地埋部分内部积水
搜题
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第9题
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