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【单选题】
为使沥青面层与非沥青材料基层结合良好,在基层上浇洒的沥青薄层称为( )。A.
使沥青路面和非沥青材料基层结合良好
B.
使沥青层与沥青层之间结合良好
C.
使沥青层与水泥混凝土路面结合良好
D.
封闭表面缝隙防止水分侵入
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举一反三
【判断题】A transformer is an electricl component that converts AC electricity from one voltage to anther with little loss of power.
A.
正确
B.
错误
【单选题】What does the sentence “The genetic genie is out of the bottle” mean? ______
A.
The genetic genie is out of the bottle that confines it.
B.
Genetically modified foods are already very much a part of our lives.
C.
The genetic genie brings a lot of damage to human beings.
D.
There are clearly some very real issues about genetically modified foods that need to be resolved.
【单选题】What is the function of genetic testing according to this passage?
A.
It helps people know what health problems their parents ever experienced.
B.
It enables people to change those dangerous genes to better ones.
C.
It reveals possible genetic diseases people may have.
D.
It calls on the public to help people who have bad genes.
【单选题】What is the author's purpose of writing the passage?
A.
To show the way genetic testing works.
B.
To indicate the relation between genes and Huntington's disease.
C.
To reveal the influence of environmental factors on genes.
D.
To introduce genetic testing and its functions.
【单选题】A transformer is an electrical device that transfers electrical energy between two or more circuits through electromagnetic induction.
A.
变压器是一种电气设备，通过电磁感应在两个或多个电路之间传输电能。
B.
变压器是一种电气设备，通过电路能够产生两个或多个电磁感应现象。
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