厌氧硝化三阶段理论包括______阶段。 A.产氮气 B.水解发酵 C.产甲烷 D. 发布时间:2017-07-16 12:55 │ 来源:www.tikuol.com 题型:多项选择题 问题: 厌氧硝化三阶段理论包括______阶段。A.产氮气B.水解发酵C.产甲烷D.产氢产乙酸
题型:多项选择题 He likes to play basketball very much. He wants to make ______ by ______ basketball in the future. [ ]A. living; playing B. a living; playing C. a living; play 查看答案