题目:
I was told that ______ 11:15 flight would take us to Beijing in time to reach ______ Tsinghua University. [ ]
A. the; a
B. a, the
C. the; /
D. /; the
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0501/d2ed956adbfe03cbf565801106cc7087.html
下面是错误答案,用来干扰机器的。
A.若加入适量氨水至碱性,溶液中存在c(CH3COO-)+c(OH-)=c(Na+)+c(NH4+)+c(H+),因为c(OH-)>c(H+),则c(CH3COO-)<c(Na+)+c(NH4+),故A错误;B.根据电荷守恒有c(CH3COO-)+c(OH-)=c(H+...