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【单选题】
（）只允许直流信号或缓慢变化的极低频率的信号通过，而不让较高频率的信号通过的电路。A.
滤波器
B.
低通滤波器
C.
带通滤波器
D.
带阻滤波器
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【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?
【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
【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－ ］
【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.
【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= ________________。
【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 ...
【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.
【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
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