A:菲律宾
B:越南
C:马来西亚 D泰国
My room is a mess, but I __________clean it before I go out tonight. I can do it in the morning.
某温度(t℃)时,测得0.01mol/L的NaOH溶液的pH=11.在此温度下,将pH=2的H2SO4溶液VaL与pH=12的NaOH溶液VbL混合,若所得混合液为中性,则Va:Vb=____ .