A.溫度低螺栓應(yīng)擰松一點(diǎn) B.溫度高應(yīng)擰緊一點(diǎn) C.溫度低螺栓應(yīng)擰緊一點(diǎn) D.溫度高應(yīng)擰松一點(diǎn)
A.觸頭間的壓力 B.觸頭間的接觸面積. C.觸頭插入深度 D.觸頭的材質(zhì)
A.95 B.100 C.110 D.120