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【单选题】
（2010?模）已知常温下：K SP （AgCl）=1.8×10 -10 mol 2 ?L -2 ，K SP （Ag 2 CrO 4 ）=1.9×10 -12 mol 3 ?L -3 ．则下列叙述正确的是（ ）A.
AgCl在饱和NaCl溶液中的K SP 比在纯水中的K SP 小
B.
向AgCl的悬浊液中加入NaBr溶液，白色沉淀转化为淡黄色，说明K SP （AgCl）＜K SP （AgBr）
C.
将0.001mol?L -1 AgNO 3 溶液滴入0.001mol?L -1 KCl和0.001mol?L -1 K 2 CrO 4 混合溶液中，先产生Ag 2 CrO 4 沉淀
D.
向AgCl的悬浊液中滴加浓氨水，沉淀溶解，说明AgCl的溶解平衡向右移动
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举一反三
【单选题】In order to continue the marriages of the shift workers
A.
wives must learn to care for the children when their husbands are absent
B.
shift work couples must administer their time and activities
C.
wives mustn' t adapt their own feelings of boredom to their husbands' work
D.
all of these
【单选题】听力原文： In some large American city schools, as many as 20-40% of the students are absent each day. There are two major reasons for such absences: one is sickness, and the other is truancy. That is stay...
A.
12-14%
B.
12-40%
C.
20-40%
D.
20-50%
【简答题】单词拼写。 1. His illness a_________ for his being absent from work. 2. I climbed into bed and p____ the blanket over my head. 3. Darwin's t_____ of evolution(进化)is based on the survival of the fittest. 4....
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