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【单选题】
取一闭合回路 L ,使三根载流导线穿过它所围成的面.现改变三根导线之间的相互间隔,但不越出积分回路,则( )
A.
回路L内的 不变，L上各点的 不变；
B.
回路L内的 不变，L上各点的 改变；
C.
回路L内的 改变，L上各点的 不变；
D.
回路L内的 改变，L上各点的 改变；
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参考答案：
举一反三
【单选题】下列湖南民俗中,主题为纪念神农思德的是( )。
A.
赶秋节
B.
打背节
C.
会姑娘
D.
赶僵尸
查看完整题目与答案
【单选题】Q345R低合金钢的焊接性接近( ),焊接时不必采取特殊的焊接工艺措施。
A.
高碳钢
B.
低碳钢
C.
耐热钢
D.
不锈钢
查看完整题目与答案
【单选题】Researchers are finding that______
A.
heart disease and cancer are the most common killers of human being
B.
blood pressure and brain function are decided by cycles of sun, moon and seasons
C.
the functions of human bodies have much to do with nature
D.
any change in human bodies goes systematically with changes in the environment
查看完整题目与答案
【判断题】《吉檀迦利》的主题思想在于表达诗人对渴望与神结合的理想境界的追求以及达到这种境界后的快乐。
A.
正确
B.
错误
查看完整题目与答案
【单选题】A team of international researchers has found new evidence that an endangered subspecies of chimpanzee is the source of the virus that causes acquired immune deficiency syndrome (AIDS) in humans. Expe...
A.
people now know the number of chimpanzees is much smaller than expected
B.
it may make it possible for scientists to discover new ways of treating AIDS.
C.
it proves some deadly human diseases can also be transmitted to wild animals
D.
it will soon help the scientists develop a vaccine that prevents the AIDS virus
查看完整题目与答案
【单选题】Which of the' following statements is true?
A.
The researchers' work was unpopular because of its biased conclusions.
B.
The music industry was accused of unclear specification of the nature of the songs.
C.
The current CD labels failed to specify whether the music is appropriate for youth.
D.
The music industry would have to yield to the pressure from the politicians.
查看完整题目与答案
【判断题】由于光电测距仪和全站仪的普及,目前水平距离的测设,尤其是长距离的测设多采用光电测距仪或全站仪进行。
A.
正确
B.
错误
查看完整题目与答案
【单选题】A team of international researchers has found new evidence that an endangered subspecies of chimpanzee is the source of the virus that causes acquired immune deficiency syndrome (AIDS) in humans. Expe...
A.
people now know the number of chimpanzees is much smaller than expected
B.
it may make it possible for scientists to discover new ways of treating AIDS.
C.
it proves some deadly human diseases can also be transmitted to wild animals
D.
it will soon help the scientists develop a vaccine that prevents the AIDS virus
查看完整题目与答案
【单选题】In the study， researchers succeeded in determining how coffee __________ different areas of the brain in 15 volunteers.
A.
motivated
B.
activated
C.
illuminated
D.
integrated
查看完整题目与答案
【多选题】传统广告的主要缺点表现在( )方面。
A.
强势灌输
B.
无法实现即时的双向交流
C.
单纯依靠印象影响消费者
D.
缺乏互动性
查看完整题目与答案
相关题目：
【单选题】下列湖南民俗中,主题为纪念神农思德的是( )。
A.
赶秋节
B.
打背节
C.
会姑娘
D.
赶僵尸
查看完整题目与答案
【单选题】Q345R低合金钢的焊接性接近( ),焊接时不必采取特殊的焊接工艺措施。
A.
高碳钢
B.
低碳钢
C.
耐热钢
D.
不锈钢
查看完整题目与答案
【单选题】Researchers are finding that______
A.
heart disease and cancer are the most common killers of human being
B.
blood pressure and brain function are decided by cycles of sun, moon and seasons
C.
the functions of human bodies have much to do with nature
D.
any change in human bodies goes systematically with changes in the environment
查看完整题目与答案
【判断题】《吉檀迦利》的主题思想在于表达诗人对渴望与神结合的理想境界的追求以及达到这种境界后的快乐。
A.
正确
B.
错误
查看完整题目与答案
【单选题】A team of international researchers has found new evidence that an endangered subspecies of chimpanzee is the source of the virus that causes acquired immune deficiency syndrome (AIDS) in humans. Expe...
A.
people now know the number of chimpanzees is much smaller than expected
B.
it may make it possible for scientists to discover new ways of treating AIDS.
C.
it proves some deadly human diseases can also be transmitted to wild animals
D.
it will soon help the scientists develop a vaccine that prevents the AIDS virus
查看完整题目与答案
【单选题】Which of the' following statements is true?
A.
The researchers' work was unpopular because of its biased conclusions.
B.
The music industry was accused of unclear specification of the nature of the songs.
C.
The current CD labels failed to specify whether the music is appropriate for youth.
D.
The music industry would have to yield to the pressure from the politicians.
查看完整题目与答案
【判断题】由于光电测距仪和全站仪的普及,目前水平距离的测设,尤其是长距离的测设多采用光电测距仪或全站仪进行。
A.
正确
B.
错误
查看完整题目与答案
【单选题】A team of international researchers has found new evidence that an endangered subspecies of chimpanzee is the source of the virus that causes acquired immune deficiency syndrome (AIDS) in humans. Expe...
A.
people now know the number of chimpanzees is much smaller than expected
B.
it may make it possible for scientists to discover new ways of treating AIDS.
C.
it proves some deadly human diseases can also be transmitted to wild animals
D.
it will soon help the scientists develop a vaccine that prevents the AIDS virus
查看完整题目与答案
【单选题】In the study， researchers succeeded in determining how coffee __________ different areas of the brain in 15 volunteers.
A.
motivated
B.
activated
C.
illuminated
D.
integrated
查看完整题目与答案
【多选题】传统广告的主要缺点表现在( )方面。
A.
强势灌输
B.
无法实现即时的双向交流
C.
单纯依靠印象影响消费者
D.
缺乏互动性
查看完整题目与答案
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