A.1B.2C.3D.4
A.設(shè)計(jì)值或規(guī)定值B.規(guī)定值減5個(gè)百分點(diǎn)C.規(guī)定值減2個(gè)百分點(diǎn)D.設(shè)計(jì)值減2個(gè)百分點(diǎn)
A.120kNB.100kNC.80kND.60kN