()设计北京香山饭店
A梁思成
B贝律铭
C杨廷宝
D吴良镛
参考答案:B
对于下列各种溶液中,微粒的物质的量浓度关系表述正确的是( )
A.在25℃100mLNH4Cl溶液中:c (Cl-)=c (NH4+)+c (NH3∙H2O)
B.0.1mol•L-1的NaHSO3溶液中:c (Na+)=c (HSO3-)+c (H2SO3)+2c (SO32-)
C.将0.2mol•L-1NaA溶液和0.1mol•L-1盐酸等体积混合所得碱性溶液中:c (Na+)+c (H+)=c (A-)+c (Cl-)
D.25℃时,pH=5的CH3COOH溶液和pH=5的NH4Cl溶液中,c(H+)不相等
- Don't you see the sign "No Parking!" on the right?
-Sorry, I didn't. But now I know parking_______ here.
A.wasn't allowed
B.isn't allowed
C.won't allow
D.doesn't allow