微信搜索关注"91考试网"公众号,领30元,获取公务员、事业编、教师等考试资料40G!
????ìa 1?óú???êμ?·?àà?yè·μ?ê?
A.SO2?￠CO2?￠CO?￠NO2??ê??áD????ˉ??
B.Na2O?￠Na2O2?￠Fe2O3?￠CuO??ê???D????ˉ??
C.HCl?￠HClO?￠HClO3?￠HClO4??ê???? á
D.NaOH?￠KOH?￠Ba￡¨OH￡?2??ê?????
????ìa &nb来源:91考试网 91ExAm.orgsp;1?óú???êμ?·?àà?yè·μ?ê?
A.SO2?￠CO2?￠CO?￠NO2??ê??áD????ˉ??
B.Na2O?￠Na2O2?￠Fe2O3?￠CuO??ê???D????ˉ??
C.HCl?￠HClO?￠HClO3?￠HClO4??ê????á
D.NaOH?￠KOH?￠Ba￡¨OH￡?2??ê?????
±?ìa′e°?￡oD
±?ìa?a??￡o
±?ìa?ùê???μ?￡o?????êμ?×é3é?￠D??êoí·?àà??
±?ìa??ò×3ì?è￡o??à§????
In this world there is always danger for those who are afraid of it. 对于害怕危险的人，这个世界上总是有危险的。 
考试问吧
