A.熱水管
B.蒸氣管
C.水管
D.銅管

A.金屬管
B.金屬線槽
C.塑料軟管
D.線槽

A.在建筑物的頂棚內(nèi)，必須采用阻燃PVC電線管布線
B.明敷或暗敷于干燥場所的金屬管布線應(yīng)采用管壁厚度不小于1.5mm的電線管
C.直接埋于素土內(nèi)的金屬管布線，應(yīng)采用水煤氣鋼管
D.電線管與熱水管、蒸汽管同側(cè)敷設(shè)時，應(yīng)敷設(shè)在熱水管、蒸汽管的上面

A.50m
B.100m
C.150m
D.250m

A.50m
B.100m
C.150m
D.200m

A.50m
B.100m
C.150m
D.200m

A.50m
B.100m
C.150m
D.200m

A.50m
B.75m
C.100m
D.150m

A.50m
B.75m
C.100m
D.150m

A.50m
B.75m
C.100m
D.150m