【单选题】【消耗次数:1】
WHO建议:产程中输入葡萄糖()
<25g/h
<30g/h
<35g/h
<40g/h
<45g/h
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相关题目
【单选题】 已知下列三个热化学方程式 ①C(s)+H2O(g)=CO(g)+H2(g) △H=+131.5kJ/mol ②1/2H2(g)+1/2Cl2(g)=HCl(g) △H=-92.3kJ/mol ③ H2(g)+1/2O2(g)=H2O(g) △H=-241.8kJ/mol 则以上三个反应的反应热大小关系正确的是
①  ①>②>③
②  ③>②>①
③  ③>①>②
④  ①>③>②
【单选题】 设 H 是群 G 的子群, x∈G, 令xHx-1={xhx-1|h∈H},则 xHx-1 有性质:
①  是代数不是半群;
②  是半群不是独异点;
③  是独异点不是群;
④  是 G 的子群。
【判断题】 设〈G,°〉是一个群.若存在从〈G,°〉到〈H,*〉的满同态,则〈H,*〉也构成群。
①  正确
②  错误
【单选题】 图样上标注内、外螺纹的标记为M20×2-5H6H/5g6g,则外螺纹中径公差带代号为 。
①  A、5H
②  B、6H
③  C、5g
④  D、6g
【单选题】 反应:2NH3(g)≒N2(g)+3H2(g),在某温度下的平衡常数为0.25,则在此温度下反应 N2(g)+ H2(g)≒NH3(g)的平衡常数为
①  4
②  0.5
③  2.0
④  0.25
【单选题】 对于反应;2H2(g)+ O2(g)≒2H2O(l) +Q,理论上最有利于H2O生成的条件是
①  高温高压
②  低温低压
③  低温高压
④  高温低压
【多选题】 令 F(x): x 喜欢步行, G( x): x 喜欢骑自行车, H(x): x 喜欢乘汽车,令前提: x(F(x) ? ?G(x)), x(G(x) ú H(y)), $x?H(x),则下面是其有效结论的有:
①  $x?F(x)
②  xG(x)
③  ?xF(x)
④  $xG(x)
【判断题】 令 F(x): x 喜欢步行, G( x): x 喜欢骑自行车, H(x): x 喜欢乘汽车,令前提: x(F(x) ? ?G(x)), x(G(x) ú H(y)), $x?H(x),则 xG(x) 是其有效结论。
①  正确
②  错误
【单选题】 已知反应A2(g)+2B2(g) 2AB2(g)△H <0,下列说法正确的
①  升高温度,正向反应速率增加,逆向反应速率减小
②  升高温度有利于反应速率增加,从而缩短达到平衡的时间
③  达到平衡后,升高温度或增大压强都有利于该反应平衡正向移动
④  达到平衡后,降低温度或减小压强都有利于该反应平衡正向移动
【多选题】 对反应N2(g)+3H2(g)≒ 2NH3(g)+Q,提高氢气转化率的方法是
①  升温
②  降温
③  增加压力
④  增加N2(g)的量
随机题目
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①  Really? Congratulations!
②  Come on. Its not that bad.
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【单选题】 A: I got a job from Dell B: Thats great news. Im very happy for you. A: Thanks. I feel like celebrating. Lets go have a beer. [填空].
①  Its on me
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【单选题】 A: Dont tell me youve got a headache again. B: [填空].
①  Sorry, I wont be late next time
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③  All right, I wont say it
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【单选题】 A: Im sorry. Those shoes are not available in your size. B: [填空].
①  No use saying sorry. Thats a real let down
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③  Its just as Ive expected
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【单选题】 A: [填空]? B: Yes, Id like to open a savings account.
①  What do you want to do, sir
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【单选题】 A: Bill told me he could not come here because his father was ill. B: [填空]
①  Its good.
②  Thats bad.
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④  What a pity!
【单选题】 A: Do you know Marks phone number? B: [填空] . A: OK. I might as well look it up in the phone book.
①  Just a second
②  Not that I know of
③  I cant think of it now
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【单选题】 A: How long can I keep the book? B: [填空].
①  Any period longer than four weeks, you will be fined
②  Four weeks, but you can renew it if you need it longer
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④  At most four weeks if you dont mind
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①  Certainly, it is
②  Thats all right
③  Sorry, I am afraid not
④  Sorry,its too long