A.由外向里看,由粗到細(xì)看 B.圖樣與說明結(jié)合著看 C.相關(guān)聯(lián)圖紙交叉看,建施與結(jié)施對著看 D.A、B、C三項結(jié)合
A.60 B.120 C.150 D.180
A.1/6 B.1/5 C.1/4 D.1/3