A.ab段:DN50mm,通气立管(T):DN100mm,ef段:DN150mm

练习题库2022-08-02  38

问题 A.ab段:DN50mm,通气立管(T):DN100mm,ef段:DN150mm,坡度:i=0.015B.ab段:DN75mm,通气立管(T):DN100mm,ef段:DN150mm,坡度:i=0.020C.ab段:DN75mm,通气立管(T):DN75mm,ef段:DN150mm,坡度:i=0.020D.ab段:DN75mm,通气立管(T):DN100mm,ef段:DN150mm,坡度:i=0.015

选项 A.ab段:DN50mm,通气立管(T):DN100mm,ef段:DN150mm,坡度:i=0.015
B.ab段:DN75mm,通气立管(T):DN100mm,ef段:DN150mm,坡度:i=0.020
C.ab段:DN75mm,通气立管(T):DN75mm,ef段:DN150mm,坡度:i=0.020
D.ab段:DN75mm,通气立管(T):DN100mm,ef段:DN150mm,坡度:i=0.015

答案 B

解析
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