试题与答案

三相四线制供电的星形联结电路,在任何情况下中性线上的电流等于()。A.零 B.各相电

题型:单项选择题

题目:

三相四线制供电的星形联结电路,在任何情况下中性线上的电流等于()。

A.零

B.各相电流的相量和

C.各相电流有效值之和

答案:

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How Room Designs Affect Our Work and Feelings

Architects have long had the feeling that the places we live in can affect our thoughts, feelings and behaviors. But now scientists are giving this feeling an empirical(经验的,实证的) basis. They are discovering how to design spaces that promote creativity, keep people focused and lead to relaxation.

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In additions to ceiling height, the view afforded by a building may influence an occupant's ability to concentrate. Nancy Wells and her colleagues at Cornell University found in their study that kids who experienced the greatest increase in greenness as a result of a family move made the most gains on a standard test of attention.

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小题1:What does Joan Meyers-Levy focus on in her research?

A.Light.

B.Ceilings.

C.Windows.

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A.the shape of furniture may affect people's feelings

B.lower ceilings may help improve students' creativity

C.children in a dim classroom may improve their grades

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A.the problem is not approached step by step

B.the researches so far have faults in themselves

C.the problem is too difficult for researchers to detect

D.research in this area is not enough to make generalized patterns小题4:Which of the following shows the organization of the passage?

CP: Central Point    P: Point   SP: Sub-point(次要点)   C: Conclusion

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题型:多项选择题

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