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[单选题]
燃气工程水平定向钻施工:管道敷设的曲率半径应满足管道强度要求,钢管曲率半径不应小于管径的();PE管曲率半径不应小于管径的()。
A.800倍,125倍
B.800倍,500倍
C.1200倍,125倍
D.1200倍,500倍
查看答案
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A.800倍,125倍
B.800倍,500倍
C.1200倍,125倍
D.1200倍,500倍
A.1000
B.500
C.1200
D.1500
A.燃气地下引入管穿过墙壁、基础或管沟时,均应设在套管内
B.燃气引入管应设在厨房或走廊等便于检修的非居住房间内
C.进入建筑物的燃气管道可以采用镀锌钢管或普通钢管
D.室内燃气管道必须为明装敷设