A.轉(zhuǎn)角桿 B.等徑桿 C.直線桿 D.終端桿
A.預(yù)應(yīng)力鋼筋混凝土桿和普桿 B.預(yù)應(yīng)力鋼筋混凝土桿和錐型桿 C.錐型桿和普桿 D.有限預(yù)應(yīng)力鋼筋混凝土桿和部分預(yù)應(yīng)力鋼筋混凝土
A.110 B.120 C.130 D.150