填空题Acid is particularly harmful to photographic materials.____

题目
填空题
Acid is particularly harmful to photographic materials.____

相似考题
更多“Acid is particularly harmful to photographic materials.____”相关问题
  • 第1题:

    脂肪酸(fatty acid)


    正确答案:是指一端含有一个羧基的长的脂肪族碳氢链。脂肪酸是最简单的一种脂,它是许多更复杂的脂(例如三脂酰甘油、甘油磷脂、鞘磷脂和蜡)的成分。

  • 第2题:

    灰色胡敏酸 grey humic acid


    正确答案: 土壤胡敏酸溶液中经一价中生盐沉淀出的组分。分离出灰色胡敏酸后,再经酸化而沉淀出的组分为棕色胡敏酸。

  • 第3题:

    单选题
    A container holds 8 pints of a solution which is 25% acid. If 2 quarts of pure acid are added to the container, what percent of the resulting mixture is acid? (1 quart=2 pints)
    A

    50

    B

    20

    C

    40

    D

    45

    E

    35


    正确答案: A
    解析:
    Remember that 2 quarts of acid are 4 pints. There are now 8×25%+4, or 6 pints of acid in 12 pints of solution. Therefore the new solution is 4/10 or 50%acid.

  • 第4题:

    单选题
    Many critics believe that video games are harmful to children that contain violent imagery.
    A

    are harmful to children that contain violent imagery

    B

    containing violent imagery are harmful to children

    C

    that contain violent imagery that harms children

    D

    containing violent imagery that are harmful to children

    E

    harmful to children containing violent imagery


    正确答案: C
    解析:
    原句意思是孩子他们自己拥有暴力的画面而不是指那些电子游戏,B纠正了这个错误。

  • 第5题:

    名词解释题
    酸碱平衡紊乱(acid-base balance)

    正确答案: 因某些原因引起机体酸碱平衡调节机制障碍,造成体内酸性或碱性物质堆积或不足,导致体液内环境酸碱稳态破坏,这种状态谓之酸碱平衡紊乱。
    解析: 暂无解析

  • 第6题:

    单选题
    A person who gets battery acid in an eye should IMMEDIATELY wash the eye with().
    A

    boric acid solution

    B

    water

    C

    baking soda solution

    D

    ammonia


    正确答案: D
    解析: 暂无解析

  • 第7题:

    转移核糖核酸(tRNA, transfer ribonucleic acid)


    正确答案:一类携带激活氨基酸,将它带到蛋白质合成部位并将氨基酸整合到生长着的肽链上的RNA。tRNA含有能识别模板mRNA上互补密码的反密码。

  • 第8题:

    酸洗除垢acid descaling


    正确答案: 在一定浓度的盐酸和氢氟酸的水溶液中再配以一定浓度的缓蚀剂作为缓蚀盐酸清洗剂注入锅水中,采用浸泡或循环清洗或浸泡结合循环清洗的方法进行酸洗的除垢方法。改为:在一定浓度的盐酸或氢氟酸的水溶液中添加缓蚀剂注入锅水中,采用浸泡或循环清洗或浸泡结合循环清洗锅内水垢

  • 第9题:

    单选题
    The electrolyte in a lead-acid storage battery consists of distilled water and ().
    A

    hydrogen chloride

    B

    calcium chloride

    C

    sulfuric acid

    D

    muriatic acid


    正确答案: D
    解析: 暂无解析

  • 第10题:

    名词解释题
    胡敏酸 humic acid

    正确答案: 土壤中溶于稀碱而不溶于稀酸的棕褐色的天然有机高分子化合物。
    解析: 暂无解析

  • 第11题:

    单选题
    What is the harmful effect of sulfur in a fuel?()
    A

    It causes excessive smoking and soot at low firing rates

    B

    It doesn’t readily burn when combined with oxygen

    C

    It clogs fuel oil strainers more often

    D

    It forms a corrosive acid when mixed with water or water vapor


    正确答案: A
    解析: 暂无解析