It was not a formal occasion, so we were asked to wear () clothes.
A、regular
B、informal
C、simple
D、cheap
第1题:
第2题:
第3题:
可以直接用来求Ag2SO4的溶度积的电池是
A.Pt|H2(p)|H2SO4(a)| Ag2SO4(s)|Ag
B.Ag|AgNO3(a)||K2SO4(a)|PbSO4(s)|Pb(s)
C.Ag(s)|Ag2SO4(s)|K2SO4(a)||HCl(a)|AgCl(s)|Ag(s)
D.Ag|AgNO3(a)||H2SO4(a)|Ag2SO4(s)|Ag(s)
第4题:
第5题: