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【单选题】
关于麻疹的叙述，不正确的是( )。
A.
病人是惟一传染源
B.
只通过呼吸道传染
C.
凡未患过麻疹或未接种过麻疹疫苗者为易感者
D.
感染后可终身免疫
E.
潜伏期末2～3d至出疹后5d有传染性
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举一反三
【判断题】Ag2CrO4的标准溶度积常数表达式为：KspΘ(Ag2CrO4)=[2cr(Ag+)]2[cr(CrO42]。( )
A.
正确
B.
错误
查看完整题目与答案
【简答题】如果λ噬菌体Cro蛋白和λDNA相混，就会形成Cro-λDNA，在Cro蛋白加入之前在DNA中加入腺嘌呤复合物或溴化乙锭，将会出现什么情况?
查看完整题目与答案
【单选题】关于历史发展的动力，下列选项中表述错误的是（ ）
A.
社会基本矛盾是社会发展的根本动力
B.
阶级斗争是社会发展的直接动力
C.
人民群众是历史的创造者
D.
革命是历史的火车头
查看完整题目与答案
【单选题】Ag 2 CrO 4 饱和溶液的Ksp=（）。
A.
［Ag ＋ ］·［CrO 4 － ］
B.
［Ag ＋ ］ 2 ·［CrO － ］ 4
C.
［Ag ＋ ］ 2 ·［CrO 4 2－ ］
D.
［Ag ＋ ］·［CrO 4 2－ ］
查看完整题目与答案
【多选题】What would you do if you were introduced to someone and you didn’t know whether or not to shake hands?
A.
You could keep your hands in your pockets in order to avoid shaking hands.
B.
You could wait and see what the other person does and then you could do the same (shake or don’t shake hands).
C.
You could be the first person to give your hand.
查看完整题目与答案
【简答题】已知：Kspθ(Ag2 CrO4)=1．1×10-12，Kspθ(AgCl)=1．8×10-10。则反应：Ag2 CrO4(s)+2Cl-====2AgCl(s)+CrO42-的Kθ= ________________。
查看完整题目与答案
【简答题】What would you do if you had an accident in your daily life? It is important for you to get some knowledge about first aid in your daily life. If a person has an accident, he / she needs medical care ...
查看完整题目与答案
【判断题】Cro蛋白对cⅠ基因的转录起负调控作用，对cro基因的转录起正调控作用。( )
A.
正确
B.
错误
查看完整题目与答案
【多选题】How would you know if you are encountering a problem space of effectuation?
A.
I can not calculate the probabilities for the outcomes of my actions.
B.
I do not know what is the exact goal of my venture.
C.
There are lots of information around me.But I do not know which to pay attention and which to ignore.
查看完整题目与答案
【单选题】Would you know __ if there was a fire in the building.
A.
what to do
B.
how to do
C.
when to do
D.
where to do
查看完整题目与答案
相关题目：
【判断题】Ag2CrO4的标准溶度积常数表达式为：KspΘ(Ag2CrO4)=[2cr(Ag+)]2[cr(CrO42]。( )
A.
正确
B.
错误
查看完整题目与答案
【简答题】如果λ噬菌体Cro蛋白和λDNA相混，就会形成Cro-λDNA，在Cro蛋白加入之前在DNA中加入腺嘌呤复合物或溴化乙锭，将会出现什么情况?
查看完整题目与答案
【单选题】关于历史发展的动力，下列选项中表述错误的是（ ）
A.
社会基本矛盾是社会发展的根本动力
B.
阶级斗争是社会发展的直接动力
C.
人民群众是历史的创造者
D.
革命是历史的火车头
查看完整题目与答案
【单选题】Ag 2 CrO 4 饱和溶液的Ksp=（）。
A.
［Ag ＋ ］·［CrO 4 － ］
B.
［Ag ＋ ］ 2 ·［CrO － ］ 4
C.
［Ag ＋ ］ 2 ·［CrO 4 2－ ］
D.
［Ag ＋ ］·［CrO 4 2－ ］
查看完整题目与答案
【多选题】What would you do if you were introduced to someone and you didn’t know whether or not to shake hands?
A.
You could keep your hands in your pockets in order to avoid shaking hands.
B.
You could wait and see what the other person does and then you could do the same (shake or don’t shake hands).
C.
You could be the first person to give your hand.
查看完整题目与答案
【简答题】已知：Kspθ(Ag2 CrO4)=1．1×10-12，Kspθ(AgCl)=1．8×10-10。则反应：Ag2 CrO4(s)+2Cl-====2AgCl(s)+CrO42-的Kθ= ________________。
查看完整题目与答案
【简答题】What would you do if you had an accident in your daily life? It is important for you to get some knowledge about first aid in your daily life. If a person has an accident, he / she needs medical care ...
查看完整题目与答案
【判断题】Cro蛋白对cⅠ基因的转录起负调控作用，对cro基因的转录起正调控作用。( )
A.
正确
B.
错误
查看完整题目与答案
【多选题】How would you know if you are encountering a problem space of effectuation?
A.
I can not calculate the probabilities for the outcomes of my actions.
B.
I do not know what is the exact goal of my venture.
C.
There are lots of information around me.But I do not know which to pay attention and which to ignore.
查看完整题目与答案
【单选题】Would you know __ if there was a fire in the building.
A.
what to do
B.
how to do
C.
when to do
D.
where to do
查看完整题目与答案