【单选题】I in Microsoft Company for many years, but I have never regretted my final decisin to switch to Apple Company. [ ]
【单选题】I studied in Cambridge for three years, but I've never regretted________the decision to move back to Beijing and________my own restaurant. [ ]
【单选题】I ______ in Paris for many years, but I have never regretted my final decision to move back to China.
【单选题】当经济学家说人们是理性的时,这是指( )
【单选题】利用钠碱循环法可脱除烟气中的SO 2 。在钠碱循环法中,Na 2 SO 3 溶液作为吸收液,可由NaOH溶液吸收SO 2 制得。当吸收液的pH降至约为6时,需送至电解槽再生。再生示意图如下: 下列有关上述过程的说法错误的是
A.
NaOH溶液吸收SO 2 制得Na 2 SO 3 溶液的离子方程式:2OH - +SO 2 =SO 3 2 - +H 2 O
B.
当吸收液呈中性时,溶液中的离子浓度满足:c(Na + )=2c(SO 3 2 - )+c(HSO 3 - )
C.
吸收液吸收SO 2 的过程中,pH与 的大小成反比
D.
HSO 3 - 在阳极放电时的电极反应式:HSO 3 - +H 2 O-2e - =S0 4 2- +3H +
【单选题】How I regretted ___the hours in the forest, ___I should have studied hard in the classroom.