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25 ℃时,浓度均为0.2 mol/L的NaHCO3和Na2CO3溶液中,下列判断不正

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  • 【名词&注释】

    现代性(modernity)、社会地位(social status)、传统文化(traditional culture)、北京奥运会开幕式、世纪末(century end)、小孤山、结合起来、化学能(chemical energy)、爱憎分明、奥运新理念

  • [单选题]25 ℃时,浓度均为0.2 mol/L的NaHCO3和Na2CO3溶液中,下列判断不正确的是

  • A. 均存在电离平衡和水解平衡
    B. 存在的粒子种类相同
    C. c(OH-)前者大于后者
    D. 分别加入NaOH固体,恢复到原温度,c(CO33-)均增大

  • 查看答案&解析查看所有试题
  • 学习资料:
  • [单选题]
  • A. praise
    B. produce
    C. include
    D. accept

  • [单选题]下列各句中没有语病的一句是
  • A. 2008北京奥运会开幕式,以“和”字为核心创意,既融入了中国传统文化的精髓,又彰显了奥运新理念,获得了群众的好评如潮。
    B. 大学毕业生不应该只关注一己之屈伸,一家之饥饱,真正需要关注的是作为接收过高等教育的个体对于群体、社会、他人的责任和义务。
    C. 小品《不差钱》对“不差钱”的反复宣称,既表达了对某些宰人商家的抗议,也反映了正在奔小康的农民提高自己社会地位的自觉自为。
    D. 在这部对话式作品中,作者阐明了对尊重生命、敬畏自然、坚持信仰、爱憎分明等被现代性所遮敝的人类理想精神的张扬。

  • [单选题]20世纪末,科学家发现,在东太平洋赤道附近,大洋中脊2600m深处一个裂缝的热泉口周围,聚集着科学上尚未认识的新奇而美丽的生物。研究认为,整个群落的生活依赖于硫细菌。硫细菌的生物能量,主要来源是
  • A. 光能
    B. 电能
    C. 热能
    D. 化学能(chemical energy)

  • [单选题]DThe Cost of Higher Education
  • A. Individuals (个人) should pay for their higher education.
    B. A university education is of huge and direct benefit to the individual. Graduates earn more than non-graduates. Meanwhile, social mobility is ever more dependent on having a degree. However, only some people have it. So the individual, not the taxpayers, should pay for it. There are pressing calls on the resources (资源) of the government. Using taxpayers' money to help a small number of people to earn high incomes in the future is not one of them.
    C. Full government funding (资助) is not very good for universities. Adam Smith worked in a Scottish university whose teachers lived off student fees. He knew and looked down upon 18th-century Oxford, where the academics lived comfortably off the income received from the government. Guaranteed salaries, Smith argued, were the enemy of hard work; and when the academics were lazy and incompetent, the students were similarly lazy.
    D. If students have to pay for their education, they not only work harder, but also demand more from their teachers. And their teachers have to keep them satisfied. If that means taking teaching seriously, and giving less time to their own research interests, that is surely something to celebrate.
    E. Many people believe that higher education should be free because it is good for the economy (经济). Many graduates clearly do contribute to national wealth, but so do all the businesses that invest (投资) and create jobs. If you believe that the government should pay for higher education because graduates are economically productive, you should also believe that the government should pay part of business costs. Anyone promising to create jobs should receive a gift of capital from the government to invest. Therefore, it is the individual, not the government, who should pay for their university education.
    F. 68. The underlined word "them" in Paragraph 2 refers to
    G. taxpayers
    H. pressing calls
    I. college graduates
    J. government resources

  • [单选题]散剂按医疗用途可分为( )。
  • A. 单散剂与复散剂
    B. 倍散与普通散剂
    C. 内服散剂与局部用散剂
    D. 分装量散剂与不分装量散剂
    E. 口服剂与外用剂

  • [单选题]小孤山新修一柱峰亭记[元] 虞集
  • A. 延祐五年,某①以圣天子之命,召吴幼清先生于临川。七月二十八日,舟次彭泽,明日,登小孤山,观其雄特险壮,浩然兴怀,想夫豪杰旷逸名胜之士,与凡积幽愤而怀感慨者之登兹山也,未有不廓然乐其高明远大而无所留滞者矣。
    B. 旧有亭在山半,足以纳百川于足下,览万里于一瞬,泰然安坐,而受之可以终日。石级盘旋以上,甃结②坚缜,阑护完固,登者忘其险焉。盖故宋江州守臣厉文翁之所筑也,距今六十二年。而守者弗虔,日就圮毁,聚足③以涉,颠覆是惧。
    C. 至牧羊亭上,芫秽充斥,曾不可少徙倚④焉。是时,彭泽邑令咸在,亦为赧然愧,赩然怒,奋然将除而治之。问守者,则曰:“非彭泽所治境也。”乃相与怃然而去。明日,过安庆,府判李侯维肃,某故人也,因以告之。曰:“此吾土也,吾为子新其亭,而更题曰‘一柱’,可乎?夫所谓‘一柱’者,将以卓然独立,无无所偏倚,二震凌冲激⑤,八面交至,终不为之动摇;使排天沃日之势,虽极天下之骄悍,皆将靡然委顺,听令其下而去。非兹峰其孰足以当之也耶!新亭峥跳在吾目中矣,子当为我记之。”
    D. 李候真定人,仕朝廷数十年,历为郎官,谓之旧人⑥,文雅有高材,以直道刚气自持,颇为时辈所忌。久之,起佐郡,人或愤其不足,候不屑也。观其命亭之意,亦足以少见其为人矣。且一亭之微,于郡政非有大损益也,到郡末旬日,一知其当为,即以为己任,推而知其当为之大于此者,必能有为无疑矣。
    E. (选自《道园学古录》卷七,有删节)
    F. 【注】①某:我。 ②甃结:砖块建筑。 ③聚足:登台阶一步一停。 ④徒倚:来回走动。⑤震凌冲激:指江水侵凌撞击。⑥旧人:有资历的老臣。
    G. 对下列句子中加点的词的解释,不正确的一项是
    H. 舟次彭泽 次:排列
    I. 芜秽充斥 秽:杂草
    J. 乃相与怃然而去 怃:失意
    K. 起佐郡 起:起任

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