【单选题】下面哪一条不能说明 “游戏是儿童已有经验的表现”?
【单选题】In reaction H 2 + CuO —— H 2 O + Cu, ____ is reduced.
【单选题】Greatly_________ as the leading scientist,he was asked to give lectures in many countries.
【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
【单选题】以下关于职业道德,错误的是( )
A.
职业道德标准多元化,代表了不同企业可能具有不同的价值观
C.
职业道德和阶级道德或社会道德之间的关系,就是一般与特殊、共性与个性的关系
D.
职业道德承载着修正职业文化和凝聚力,影响深远
【单选题】人的职业能力主要就是指人的______。
【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