![](https://static.youtibao.com/asksite/comm/h5/images/m_q_title.png)
[单选题]
下列选项中()是常用的压缩工具
A.HyperSnap
B.WinRAR
C.ireFox
D.Windows Media player
![](https://static.youtibao.com/asksite/comm/h5/images/m_q_a.png)
B、WinRAR
![](https://static.youtibao.com/asksite/comm/h5/images/solist_ts.png)
A.HyperSnap
B.WinRAR
C.ireFox
D.Windows Media player
B、WinRAR
A.酸性由强至弱:HX>HY>H2CO3
B.结合H+的能力:Y->CO32->X->HCO3-
C.溶液碱性:NaX>Na2CO3>NaY>NaHCO3
D.4NaX溶液中通入足量CO2后的离子浓度:c(Na+)>c(HCO3-)>c(X-)>c(OH-)>c(H+)
A.0.11111111111111
B.0.097222222222222
C.0.0555555556
D.0.18055555555556