【判断题】
为了避免剩余电流动作保护器误动作，要求其不动作电流不低于额定电流的 3/4 。
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输电主网与电力网间用的变压器多是降压变压器。
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端子排垂直布置时 , 排列顺序由上而下 , 水平布置时 , 排列顺序由左而右。
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直导线在磁场中运动一定会产生感应电动势。
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高低压同杆架设 , 在低压线路工作时 , 工作人员与最上层高压带电导线的垂直距离不得小于 0.7m。
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测量直流电流时 , 电流表应与负载串联在电路中 , 并注意仪表的极性和量程。
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移动电气设备的电源线单相用三芯电缆 , 三相用四芯电缆。
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人体触电时 , 大脑易损期最为敏感 , 也最容易受到伤害而发生昏迷 , 而导致血液循环中止死亡。
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变压器型号中横短线后面的数字表示变压器的额定容量 , 其单位是 kVA。
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干式变压器所在环境的相对湿度应不大于 50%
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变压器利用电磁感应原理，把交流输入电压升高降低为不同频率的交流输出电压
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高压验电器每六个月要进行一次预防性实验
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弹簧操作机构是利用弹簧瞬间释放的能量完成断路器的合闸的
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He makes his students ___ knowledge through various kinds of interesting activities.
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___ they have written about the behaviors of animals is hardly anything new.
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Showing some sense of humor can be a(n) ___ way to deal with some stressful situations.
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Bullying (恃强欺弱) can ___ a climate of fear and anxiety in school, and prevent students from focusing on their schoolwork.
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Science can now ___ many things which were thought to be mysterious by ancient people.
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The school has ___ many after-class activity groups for the pupils to make their spare time more colorful.
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When he was a small kid, he ___ from his peers because he could read fast and remember whatever he rea D.
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The fall in the number of deaths from heart disease is generally ___ improvements in diet.
A. put up with
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We can be partners for now, but ultimately you have to ___ to develop a new software for our project.
A. keep up
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Emotional Intelligence (情商) could be of practical use in many ___ such as how companies decide which job applicant to hire, how parents should raise their children, how schools should teach the students, and so on.
A. aspects
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The teacher should praise students for their correct answers and also suggest ___ possibilities.
A. unlimited
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In some classrooms, desks are arranged in a U-shape, so the teacher can ___ easily with the students.
A. interrupt
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Computer technology ___ individuals to educate themselves and adapt to a constantly changing job market.
A. lets
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Our hope for an enjoyable dinner was instantly ___ when the waiter dropped a salad plate on my hea D.
A. spoiled
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___ the world has ever seen has occurred in the information and communications technologies.
A. Great a change
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___ so many people around, it wasn’t convenient to have a long talk with him.
A. As
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Alice used to be terribly shy, but working abroad for a year has completely ___ her.
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Chinese Mandarin (普通话) is ___ for foreigners to learn because the changes in the tone will totally change the meaning of words.
A. difficult
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Take action on those things that will have the biggest ___ impact on your life with the least amount of effort.
A. portable
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