题目

The geography teacher tells us that China has almost the same size as the USA but its population is ________ that of the USA. A . larger six times than B . six times larger than C . six times as larger as D . as six times large as 答案:B反应 PCl5(g) PCl 3(g)+Cl2(g)   ① 2HI(g) H2(g)+I2(g)       ② 2NO2(g) N2O4(g)            ③ 在一定条件下,达到化学平衡时,反应物的转化率均是a%。若保持各自的温度不变、体积不变,分别再加入一定量的各自的反应物,则转化率 A.均不变                             B.均增大 C.①增大,②不变,③减少             D.①减少,②不变,③增大
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