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【简答题】
Who can take part in the academic year program? ______ students.
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反馈参考答案：
举一反三
【单选题】下面哪一条不能说明 “游戏是儿童已有经验的表现”?
A.
总是选择与自己水平相当的玩伴
B.
游戏中总是重复玩同一种材料
C.
学习如何玩规则游戏五子棋
D.
喜欢扮演医生的角色
【单选题】Greatly_________ as the leading scientist,he was asked to give lectures in many countries.
A.
respecting
B.
respects
C.
respected
D.
to respect
【单选题】Considering the following net reaction: 2Fe (s) + O 2(g) + 4H + 2F 2+ + 2H 2 O of the oxidation of iron, which half reaction between the above will be the oxidation half reaction.
A.
O 2(g) + 4H + + 4e - 2H 2 O
B.
2Fe (s) 2Fe 2+ + 4e -
C.
2Fe (s) + 4e - 2Fe 2+
D.
2Fe (s) 2Fe 2+
【简答题】Express the rate of the reaction: 2N 2 O(g) 2N 2 (g) + O 2 (g) in terms of (a) △ [N 2 O] (b) △ [O 2 ]
【简答题】半控型器件的特点是什么？哪种电力电子器件是半控型器件？
【单选题】A reaction profile (not to scale!) for the reaction is shown below: C 2 H 5 Cl ---> C 2 H 4 + HCl What is the activation energy of the REVERSE reaction, and is the FORWARD reaction exothermic or endot...
A.
70 kJ and endothermic forward reaction
B.
205 kJ and exothermic forward reaction
C.
275 kJ and endothermic forward reaction
D.
275 kJ and exothermic forward reaction
E.
205 kJ and endothermic forward reaction
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