有一工作,甲做2天后乙接着做,做了10天后完成了工作。三‘知乙单独完成需要30天,那么甲单独完成此工作需要( )天。 有一工作,甲做2天后乙接着做,做了10天后完成了工作。三‘知乙单独完成需要30天,那么甲单独完成此工作需要( )天。 分类:城市规划原理 题型:单选题 查看答案
The Soviet Union was not being listed as a third—world natio The Soviet Union was not being listed as a third—world nation just because of___ 分类:城市规划原理 题型:单选题 查看答案