旧涂层可根据其附着力的强弱和()的大小,决定是否全部清除或局部清除。A.基层粘着力 发布时间:2020-01-21 17:03 │ 来源:www.tikuol.com 题型:单项选择题 问题: 旧涂层可根据其附着力的强弱和()的大小,决定是否全部清除或局部清除。A.基层粘着力B.表面强度C.基层吸附性D.表面硬度
题型:单项选择题 As some countries attempt to shift away from natural gas or petroleum energy systems toward coal-based systems, the need for coal slurry(煤泥) will increase in these countries,()transport mode will be the first choice for transfer this kind of product.A.Water carriageB.Pipeline transportC.Rail transportD.Surface transport 查看答案