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[单选题]
各梁补强时,侧梁在侧柱内侧局部腐蚀穿孔时,补强板须穿过枕梁、横梁,长度盖过侧柱两翼板边缘各()mm以上,宽度与侧梁腹板高度相同。
A.50mm
B.100mm
C.150mm
D.300mm
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A.50mm
B.100mm
C.150mm
D.300mm
各梁翼板边缘腐蚀或个别腐蚀凹坑超限时,不作为腐蚀深度的测量依据,但须()。
A.焊修
B.截换
C.补强
D.挖补
A.30°
B.45°
C.60°
D.70°
A.补平形补强板
B.补角形补强板
C.马蹄形补强板
D.焊修