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【单选题】
下列生药具有毒性的是()
A.
芦荟
B.
麦冬
C.
天麻
D.
半夏
E.
党参
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举一反三
【单选题】What problem does the man have with the introductory poetry class?
A.
The class meets during his working hours.
B.
The class is too far away.
C.
He has another class at the same time.
D.
He's already familiar with the material.
【简答题】A.She is planning to drop the class. B.She thinks the man wants to take the class. C.She only has one class on Tuesdays and Thursdays. D.She has to leave for class.
【多选题】下列科目中,期末应转入“本年利润”科目贷方的有()。
A.
营业费用
B.
主营业务收入
C.
营业外心入
D.
所得税
【简答题】已知反应2Hg(l)+Cl 2 (g)====Hg 2 Cl 2 (s), (298K)=-210.7kJ·mol -1 ,则 (Hg 2 Cl 2 ,s,298K)为______kJ·mol -1 。
【简答题】298K时,已知 ,试计算:(1)反应Hg2++2e→ Hg22+的标准电极电势;(2)为反应Hg+Hg2+→Hg22+设计电池,并计算该反应的标准平衡常数。
【单选题】在温度 T 时 φ ф (Hg 2 2+ /Hg) = a , Hg 2 SO 4 的溶度积为 K sp ,则 φ ф (Hg 2 SO 4 /Hg) 为:( )
A.
(A) a + ( RT /2 F )ln K sp
B.
(B) a - ( RT /2 F )ln K sp
C.
(C) a + ( RT / F )ln K sp
D.
(D) a - ( RT / F )ln K sp
【单选题】在温度 T 时 φ θ (Hg 2 2+ /Hg) = a , Hg 2 SO 4 的溶度积为 K sp ,则 φ θ (Hg 2 SO 4 /Hg) 为:
A.
a + ( RT /2 F )ln K sp ;
B.
a - ( RT /2 F )ln K sp ;
C.
a + ( RT / F )ln K sp ;
D.
a - ( RT / F )ln K sp 。
【多选题】If the class is noisy, which of the following should you choose to settle the class?
A.
Ask the whole class to copy a list of food words onto a piece of paper from the board.
B.
Ask the pupils to listen and write down the number of pictures you stick on the blackboard.
C.
Ask the children to take out their cards and do paired practice.
D.
Ask children to prepare the dialogue to get ready to act.
【单选题】已知汞(Hg)极易蒸发为剧毒的汞蒸气。制氧气的方法有: ①2KMnO 4 K 2 MnO 4 +MnO 2 +O 2 ↑ ②2KClO 3 2KCl+3O 2 ↑ ③2HgO 2Hg+O 2 ↑ ④分离液态空气制氧气 ⑤用双氧水(H 2 O 2 )制取O 2 (MnO 2 作催化剂)2H 2 O 2 2H 2 O+O 2 ↑ 其中适用于实验室制氧气的方法是(    )
A.
①②⑤
B.
②④⑤
C.
①③⑤
D.
②③⑤
【简答题】中国第一部写现代产业工人生活的小说是恽铁樵的( )。
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