A.55% B.50% C.84% D.90%
A.一戶 B.二戶 C.三戶 D.四戶
A.與膠管項(xiàng)部平齊 B.離開(kāi)膠管項(xiàng)部2-3mm C.離開(kāi)膠管項(xiàng)部4-5mm D.覆蓋膠管項(xiàng)部