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【单选题】
呈酸味的本体是--A.
钠离子
B.
钾离子
C.
氯离子
D.
氢离子
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【简答题】听短文，回答问题. 1. What is David?. A. He’s a car driver. B. He’s a nurse. C. He’s a doctor. 2. How many days a week does David go to work? A. Four days. B. Five days. C. Six days. 3. What time must David ge...
【简答题】单词拼写 1. I was___(震惊) when I heard about your accident. 2 . Teamwork is required in order to achieve these ___(目标) . 3 . His____ (抱负) is to become a great scientist in the future. 4 . The doctor told h...
【简答题】past a. The days are past when we used foreign oil. b. There was no question that Benz had a respectable past . c. The warm Japanese Current flows past the coast. d. Tom walked past without noticing h...
【简答题】用下列词填空:which, as, when, who, whom, where, when, why, that. 1.This is the very house _____ he lived. 2.In Xi’an, I met a teacher, ____ has a strong love for cultural relics and took me to visit the his...
【单选题】下列与持有存货成本有关的各成本计算中,不正确的是( )。
A.
取得成本=购置成本
B.
储备存货的总成本=取得成本+储存成本+缺货成本
C.
订货成本=订货固定成本+订货变动成本
D.
储存成本=固定储存成本+变动储存成本
【单选题】NaCl是溶于水的,然而,当将浓HCl加到NaCl饱和溶液中时,NaCl晶体就沉淀出来,这是因为 ( )
A.
HCl是强酸,任何强酸都导致沉淀;
B.
酸的存在降低了
C.
共同离子 使平衡移动,生成NaCl晶体
D.
不受酸的影响,但增加 能使它减小
【简答题】C. Past Mistakes: — Me, officer ? (1)____ ! — Come off it, Mulligan. For a start, you spent three days watching the house. You shouldn’t (2)____ that, you know. The neighbors got suspicious (3)____...
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