皮皮学，免费搜题
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搜题
【单选题】
真溶液、胶体和悬浊液这三种分散质的根本区别是( )
A.
是否为大量分子或离子的集合体
B.
分散质微粒直径的大小
C.
能否透过滤纸或半透膜
D.
是否均匀、稳定透明
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举一反三
【单选题】It is suggested in Paragraph 4 that______.
A.
loss of memory can be attributed to stress
B.
post-traumatic stress is a kind of brain disorder
C.
severe stress may hinder memory forming
D.
chronic distress has not been correctly dealt with
查看完整题目与答案
【单选题】In the sentence “Consumers bother less with pocket change and are able to use plastic even at tradition- ally cash - only vendors.” ( paragraph 3 ), the word “plastic” has the meaning of _____.
A.
credit card
B.
plastic bill
C.
money
D.
check
查看完整题目与答案
【单选题】The research conducted by Porter and Landfield showed that ______.
A.
the levels of adrenal hormones have nothing to do with brain aging
B.
changes in the levels of adrenal hormones can affect brain aging
C.
chronic stress may strengthen one's memory
D.
the rate of brain aging always remains stable
查看完整题目与答案
【简答题】“酵素”一词来自日语，实际上就是披着外国马甲的酶。人体现在发现的酶有700多种，一般能够自己合成，不需要额外补充。即使需要补充，也不能通过口服的方式。商家的宣传的确没错，但他们不会告诉你，口服酵素一点用都没有。例如，SOD(超氧化物歧化酶)是人体内最重要的酶之一，也是酵素商家的主打产品。但是通过对比试验可以发现，酵素产品中的SOD活性单位还不如同等质量的生菜和西红柿。所以说，花重金购买概念产品，还...
查看完整题目与答案
【单选题】残疾的预防分为
A.
一级
B.
二级
C.
三级
D.
四级
E.
五级
查看完整题目与答案
【多选题】下列各种中,属于可行性研究报告内容的有( )。
A.
项目摘要
B.
项目市场分析与需求分析
C.
项目融资的资金来源
D.
项目不确定分析
查看完整题目与答案
【单选题】______ (长期的) stress has even more ways that can sabotage your health.
A.
Christian
B.
chronological
C.
Chronic
D.
synchronical
查看完整题目与答案
【单选题】According to the passage, dairies are ______.
A.
increasing the use of plastic bottles
B.
giving up the use of glass bottles
C.
experimenting with the use of paper bottles
D.
re-using their paper containers
查看完整题目与答案
【单选题】The research’ conducted by Porter and Land field shows that
A.
the levels of adrenal hormones have nothing to do with brain aging。
B.
changes in the levels of adrenal hormones can affect brain aging．
C.
chronic stress may strengthen one’s memory．
D.
the rate of brain aging always remains stable．
查看完整题目与答案
【单选题】在不同生物中的超氧化物歧化酶(SOD)含有不同的金属元素，原核生物中的SOD一般都是含(    )的。
A.
Cu和Zn
B.
Fe    
C.
Mo    
D.
Cu
查看完整题目与答案
相关题目：
【单选题】It is suggested in Paragraph 4 that______.
A.
loss of memory can be attributed to stress
B.
post-traumatic stress is a kind of brain disorder
C.
severe stress may hinder memory forming
D.
chronic distress has not been correctly dealt with
查看完整题目与答案
【单选题】In the sentence “Consumers bother less with pocket change and are able to use plastic even at tradition- ally cash - only vendors.” ( paragraph 3 ), the word “plastic” has the meaning of _____.
A.
credit card
B.
plastic bill
C.
money
D.
check
查看完整题目与答案
【单选题】The research conducted by Porter and Landfield showed that ______.
A.
the levels of adrenal hormones have nothing to do with brain aging
B.
changes in the levels of adrenal hormones can affect brain aging
C.
chronic stress may strengthen one's memory
D.
the rate of brain aging always remains stable
查看完整题目与答案
【简答题】“酵素”一词来自日语，实际上就是披着外国马甲的酶。人体现在发现的酶有700多种，一般能够自己合成，不需要额外补充。即使需要补充，也不能通过口服的方式。商家的宣传的确没错，但他们不会告诉你，口服酵素一点用都没有。例如，SOD(超氧化物歧化酶)是人体内最重要的酶之一，也是酵素商家的主打产品。但是通过对比试验可以发现，酵素产品中的SOD活性单位还不如同等质量的生菜和西红柿。所以说，花重金购买概念产品，还...
查看完整题目与答案
【单选题】残疾的预防分为
A.
一级
B.
二级
C.
三级
D.
四级
E.
五级
查看完整题目与答案
【多选题】下列各种中,属于可行性研究报告内容的有( )。
A.
项目摘要
B.
项目市场分析与需求分析
C.
项目融资的资金来源
D.
项目不确定分析
查看完整题目与答案
【单选题】______ (长期的) stress has even more ways that can sabotage your health.
A.
Christian
B.
chronological
C.
Chronic
D.
synchronical
查看完整题目与答案
【单选题】According to the passage, dairies are ______.
A.
increasing the use of plastic bottles
B.
giving up the use of glass bottles
C.
experimenting with the use of paper bottles
D.
re-using their paper containers
查看完整题目与答案
【单选题】The research’ conducted by Porter and Land field shows that
A.
the levels of adrenal hormones have nothing to do with brain aging。
B.
changes in the levels of adrenal hormones can affect brain aging．
C.
chronic stress may strengthen one’s memory．
D.
the rate of brain aging always remains stable．
查看完整题目与答案
【单选题】在不同生物中的超氧化物歧化酶(SOD)含有不同的金属元素，原核生物中的SOD一般都是含(    )的。
A.
Cu和Zn
B.
Fe    
C.
Mo    
D.
Cu
查看完整题目与答案