单项选择题
A.D+2.5d B.D+3d C.(D+3d)±0.5d D.(D+2.5d)±0.5d
A.1%B.5%C.0.5%D.10%
A.越低B.越高C.不变D.二者无关
A.520MPa,545MPa,555MPa B.525MPa,545MPa,550MPa C.520MPa,520MPa,550MPa D.520MPa,545MPa,550MPa
A.65mm B.30mm C.60mm D.35mm
A.抗滑性能试验 B.抗破坏性能试验 C.扭转刚度性能试验 D.对接扣件抗拉性能试验
A.100mm B.120mm C.140mm D.180mm
A.1.05 B.1.10 C.1.25 D.6d