地下水通过()孔隙流入管内。A、花管B、井壁管C、滤水管D、沉淀管 发布时间:2020-12-07 20:46 │ 来源:www.tikuol.com 题型:单项选择题 问题: 地下水通过()孔隙流入管内。A、花管B、井壁管C、滤水管D、沉淀管
题型:单项选择题 His daughter is busy making _________ for the entrance examination to be held in June.A.giftsB.speechesC.preparationsD.choices 查看答案