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维生素A醋酸酯胶丸测定含量时，取内容物m，加环己烷溶解并稀释至10 ml，摇匀，精密量取0.1 ml，再加己烷溶解并稀释至10 ml，使其浓度为9～15 IU/mol。维生素A的鉴别试验为A、三氯化铁反应 B、硫酸锑反应 C、2，6-二氯靛酚反应 D、三氯化锑反应 E、硝酸银反应 紫外分光光度法测定维生素A含量时，测定最大吸收波长为330 nm，且A/A328比值中有1个比值超过了规定值±0.02，应采用的测定方法是A、多波长测定 B、取A328值直接计算 C、用皂化法 D、用校正值计算 E、比较校正值与未校正值的差值后再决定
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参考答案：
举一反三
【单选题】“细身”指的是下面哪一世界:()
A.
世俗世界
B.
有话世界
C.
有情世界
D.
有器世界
查看完整题目与答案
【单选题】The jury has the power to ______ or acquit.
A.
convict
B.
accuse
C.
charge
D.
try
查看完整题目与答案
【判断题】远期付款交单和即期付款交单的交单条件是相同的：买方不付款就不能取得代表货物所有权的单据，所以卖方承担的风险责任基本上没有变化。
A.
正确
B.
错误
查看完整题目与答案
【单选题】建筑结构性能化的功能目标包括（）。
A.
建筑构件在火灾作用下的变形不应超过允许变形值
B.
火灾的可能过火面积与满足规范要求的防火分区的过火面积基本相同
C.
不会因构件的破坏而危及建筑内部人员的疏散安全和灭火救援人员的安全
D.
防火分隔构件的燃烧性能具有足够的耐火极限，并满足控制火灾的要求
查看完整题目与答案
【单选题】What does the term 'behavior' in the second paragraph especially refer to in this passage?
A.
It refers to observable and physical movements and acts.
B.
It refers to the part of language behavior. that involves understanding or interpretation.
C.
If refers to both the overt and the unobservable language behaviors in communicating.
D.
If refers to acts of speaking and writing.
查看完整题目与答案
【单选题】听力原文： A jury has found former French official Maurice Mapont guilty of crimes against humanity for expelling Jews during World War II. Mapont was sentenced to ten years in prison. The sentence ended t...
A.
expelling Jews during World War Ⅱ
B.
killing Jews during World War Ⅱ
C.
murdering Jews during World War Ⅱ
D.
torturing Jews during World War Ⅱ
查看完整题目与答案
【单选题】The jury has taken its decision, _____?
A.
haven't they
B.
hasn't it
C.
have they
D.
has it
查看完整题目与答案
【简答题】Java语言对Java源文件的名称和类的名称约束是?
查看完整题目与答案
【单选题】A jury in Northern California has found a physician【C1】______ for elder abuse because he failed to 【C2】______ enough pain medication for a【C3】______ ill patient, William Bergman. The jury awarded one-...
A.
liable
B.
invalid
C.
illegal
D.
guilty
查看完整题目与答案
【单选题】The______has the right to determine whether the evidence is believable or not
A.
judge
B.
jury
C.
court
D.
attorney
查看完整题目与答案
相关题目：
【单选题】“细身”指的是下面哪一世界:()
A.
世俗世界
B.
有话世界
C.
有情世界
D.
有器世界
查看完整题目与答案
【单选题】The jury has the power to ______ or acquit.
A.
convict
B.
accuse
C.
charge
D.
try
查看完整题目与答案
【判断题】远期付款交单和即期付款交单的交单条件是相同的：买方不付款就不能取得代表货物所有权的单据，所以卖方承担的风险责任基本上没有变化。
A.
正确
B.
错误
查看完整题目与答案
【单选题】建筑结构性能化的功能目标包括（）。
A.
建筑构件在火灾作用下的变形不应超过允许变形值
B.
火灾的可能过火面积与满足规范要求的防火分区的过火面积基本相同
C.
不会因构件的破坏而危及建筑内部人员的疏散安全和灭火救援人员的安全
D.
防火分隔构件的燃烧性能具有足够的耐火极限，并满足控制火灾的要求
查看完整题目与答案
【单选题】What does the term 'behavior' in the second paragraph especially refer to in this passage?
A.
It refers to observable and physical movements and acts.
B.
It refers to the part of language behavior. that involves understanding or interpretation.
C.
If refers to both the overt and the unobservable language behaviors in communicating.
D.
If refers to acts of speaking and writing.
查看完整题目与答案
【单选题】听力原文： A jury has found former French official Maurice Mapont guilty of crimes against humanity for expelling Jews during World War II. Mapont was sentenced to ten years in prison. The sentence ended t...
A.
expelling Jews during World War Ⅱ
B.
killing Jews during World War Ⅱ
C.
murdering Jews during World War Ⅱ
D.
torturing Jews during World War Ⅱ
查看完整题目与答案
【单选题】The jury has taken its decision, _____?
A.
haven't they
B.
hasn't it
C.
have they
D.
has it
查看完整题目与答案
【简答题】Java语言对Java源文件的名称和类的名称约束是?
查看完整题目与答案
【单选题】A jury in Northern California has found a physician【C1】______ for elder abuse because he failed to 【C2】______ enough pain medication for a【C3】______ ill patient, William Bergman. The jury awarded one-...
A.
liable
B.
invalid
C.
illegal
D.
guilty
查看完整题目与答案
【单选题】The______has the right to determine whether the evidence is believable or not
A.
judge
B.
jury
C.
court
D.
attorney
查看完整题目与答案
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