______不是滚动导轨的缺点。A.动、静摩擦系数很接近 B.结构复杂 C.对脏物较 发布时间:2017-07-01 16:03 │ 来源:www.tikuol.com 题型:单项选择题 问题: ______不是滚动导轨的缺点。A.动、静摩擦系数很接近B.结构复杂C.对脏物较敏感D.成本较高
题型:单项选择题 32. When the Chinese delegation arrived at Vienna airport, they were received _____ cheers.A.inB.forC.onD.With 查看答案