A.吊點(diǎn)均分柱長 B.吊點(diǎn)位于重心處 C.跨中正彎矩最大 D.吊點(diǎn)間跨中正彎矩與吊點(diǎn)處負(fù)彎矩相等
A.70% B.75% C.100%
A.下料→冷拉→對(duì)焊 B.下料→對(duì)焊→冷拉 C.冷拉→下料→對(duì) D.對(duì)焊→冷拉→下料