水泵轴孔径磨损过甚,可用()方法修复。A.研磨 B.粘结 C.镶套 发布时间:2019-09-28 08:44 │ 来源:www.tikuol.com 题型:单项选择题 问题: 水泵轴孔径磨损过甚,可用()方法修复。A.研磨B.粘结C.镶套
题型:单项选择题 Which of the following countries is negative about nuclear plants A.China.B.The United States.C.Japan.D.South Africa. 查看答案