A.500 B.580 C.600 D.620
A.扭轉(zhuǎn)應(yīng)力 B.扭轉(zhuǎn)剪切應(yīng)力 C.剪切應(yīng)力 D.彎曲應(yīng)力
A.52.5-48.5 B.50.5-46.5 C.42.5-38.5 D.26-24.5