單項選擇題滑動軸承選用潤滑脂潤滑的條件為()。
A、載荷系數(shù)大于6
B、載荷系數(shù)小于6
C、載荷系數(shù)小于5
D、載荷系數(shù)大于5
A、載荷系數(shù)大于6
B、載荷系數(shù)小于6
C、載荷系數(shù)小于5
D、載荷系數(shù)大于5