试题与答案

星形联接

题型:名词解释

题目:

星形联接

答案:

参考答案:

把三相发电机的三个线圈联在一起,用三个首端输出电能叫做电源的星形联接。把三个线圈的未端连在一起,用三个首端与电源相接,叫做负载的星形联接。

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题型:完形填空
A noted American psychologist once remarked that childhood is a magical period in one’s life.Indeed it is, for during        one undergoes a step-by-step transformation not only in mental capacity, but also in physical and verbal skills.Each step         an increase in the difficulty of a child’s conceptual and learning abilities.During the early stages of childhood, from infancy to about five, the child learns         skills including using the toilet, bathing and dressing himself independently.At this stage, he also learns to be very observant, curious, imaginative and creative.His ability to remember things also       at this stage. He remembers details that an adult may have difficulty in remembering.Gradually , he learns elementary skills in problem-solving.At school, particular in        classes, the child is especially creative.Given a piece of paper and some colored pencils, he draws a variety of        from his surroundings as well as from his          circle.It is not surprising to see a child draw a monster to represent an abusive father, and an angel to represent a loving and caring mother.
As he graduates to the later stages of childhood bordering on the teenage years, the child learns the          of human relations and socialization by interacting with his peers—his friends and schoolmates. He also learns to         with new life situations, including dates and part-time work. Given a tight schedule of schoolwork, the child learns to prepare his own schedules of work and play; the more________ and less serious ones manage to take time out of their busy schedules of assignments, reports and tests and examinations to go with their friends on relaxation entertainment.
小题1:
A.adolescenceB.adulthoodC.childhoodD.infancy
小题2:
A.signsB.presentsC.preventsD.signals
小题3:
A.difficultB.simpleC.usefulD.helpful
小题4:
A.developsB.increasesC.reducesD.strengthens
小题5:
A.musicB.artC.chemistryD.biology
小题6:
A.picturesB.buildingsC.reflectionsD.images
小题7:
A.familyB.schoolC.teacherD.friend
小题8:
A.competenceB.commitmentC.complexityD.competition
小题9:
A.agreeB.experimentC.withdrawD.concern
小题10:
A.practical B.cautiousC.enthusiasticD.stubborn
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