已知H2CrO4是弱酸,在一饱和Ag2CrO4水溶液(含有Ag2CrO4固体)中 发布时间:2017-05-05 17:41 │ 来源:www.tikuol.com 题型:不定项选择题 问题: 已知H2CrO4是弱酸,在一饱和Ag2CrO4水溶液(含有Ag2CrO4固体)中,添加下列试剂能使c(CrO42-)减少的是 [ ]A. NH3 B. 硝酸 C. 水 D. AgNO3
题型:不定项选择题 ―Do you have anything to do this afternoon? ―What’s up? ―Let’s go shopping. It’s said that Jinying Shop ______, and all the sweaters are sold at half price. ―Why not?A.has closed downB.was closing downC.closes downD.is closing down 查看答案