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【单选题】
在2L的密闭容器中，加入1 mol和3 mol的H 2 和N 2 ，发生的反应为 在2s末时，测得容器中含有0.4 mol的NH 3 ，则该反应中H 2 的化学反应速率是 [     ]
A.
0.05 mol/(L·s)
B.
0.1 mol/(L·s)
C.
0.15 mol/(L·s)
D.
0.2 mol/(L·s)
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举一反三
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From an experiment.
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From a research on chimpanzees.
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【单选题】听力原文：M: I thought you were going to call me last night about the plans for the conference on language teaching. W: Sorry, I should have, but Tom and Jane stopped by and stayed until midnight. Q: What ...
A.
The woman had been planning for the conference.
B.
The woman called the man but the line was busy:
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The woman didn't come back until midnight.
D.
The woman had guests all evening.
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【单选题】食滞肠胃型泄泻的特征是（）。
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腹痛肠鸣，泻下粪便臭如败卵，泻后痛减
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大便色黄褐而臭，泻下急迫，肛门灼热
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【简答题】What would people learn from the passage? [A] To find out about organizing conferences. [B] To learn how to reward good employees. [C] To find out about running a business. [D] To learn some details a...
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相关题目：
【单选题】Where does Humphrey get the inspiration for his idea?
A.
From an experiment.
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From a conference.
C.
From a research on chimpanzees.
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【单选题】听力原文：M: I thought you were going to call me last night about the plans for the conference on language teaching. W: Sorry, I should have, but Tom and Jane stopped by and stayed until midnight. Q: What ...
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B.
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C.
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D.
The woman had guests all evening.
查看完整题目与答案
【单选题】食滞肠胃型泄泻的特征是（）。
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查看完整题目与答案
【简答题】What would people learn from the passage? [A] To find out about organizing conferences. [B] To learn how to reward good employees. [C] To find out about running a business. [D] To learn some details a...
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