A.括號(hào)"()" B.斜線"/" C.頓號(hào)"、" D.分號(hào)";"
A.2 B.4 C.6 D.8
A.結(jié)構(gòu)施工 B.構(gòu)造鋼筋 C.抗扭鋼筋 D.帶鉤鋼筋