【单选题】已知 0.10mol/L 一元弱酸溶液的 pH=3.0,则 0.10mol/L 共轭碱 NaB 溶液的 pH 是( )。
【判断题】Obama did not get support from influential gays and lesbians in 2008.
【单选题】What did Congress and the Obama administration do for slowing global warming?
A.
Collecting the evidence of climate change.
B.
Taking action to limit emissions which absorb heat.
C.
Recording the highest temperature in a year.
D.
Negotiating a new treaty for reducing the emissions.
【判断题】超额性质的定义 在相同温度、压力和组成下,真实溶液与理想溶液的性质之和 。
【单选题】How many electoral votes did Obama get?
A.
More than 300 electoral votes.
D.
85% of the electorate votes.
【单选题】What was the divergence between Netanyahu and Abbas?
A.
The former did not get Obama's help while the latter did.
B.
They did not reach any agreement on the construction issue.
C.
They diverged in the place where they were going to hold talks..
D.
The former refused to discuss the final-status issues while the latter insiste
【单选题】真实溶液与相同温度、压力和组成的理想溶液的摩尔广度性质之差,称为()
【单选题】在使用多条件求和函数SUMIFS时,若条件有2个,则该函数的参数有( )个。