在小电流接地系统发生单相接地故障时保护装置动作发生接地信号（） 发布时间：2019-01-21 09:39 │ 来源：www.tikuol.com 题型：判断题 问题： 在小电流接地系统发生单相接地故障时保护装置动作发生接地信号（）
题型：判断题 完形填空。 Jane is a good English teacher in M. T. School. The students like her and her __1__ very much. Now, summer is coming. The weather is very __2__ . The students are often sleepy (困倦的), and don't like to listen to __3__ classes. "__4__ can I make the students listen to my classes?" Jane asks herself. One day, she __5__ some riddles (谜语) in a book. " It can be a __6__ way. The students may like to answer riddles. "Jane thinks. Next afternoon, she asks a riddle __7__ class," It has got two hands and a face, __8__ no feet. What is it?" The students are happy about the riddle. One of the students __9__ and says ,"It's a clock (时钟). " "Yes, you're __10__ . " Jane says. She's happy that the students are not sleepy now. ( ) 1. A. family( ) 2. A. cool( ) 3. A. his( ) 4. A. What( ) 5. A. reads( ) 6. A. bad( ) 7. A. at ( ) 8. A. and( ) 9. A. looks at( ) 10. A. rightB. classesB. cold B. her B. who B. writes B. good B. on B. but B. sits downB. fine C. name C. warm C. its C. Where C. matchesC. last C. in C. so C. listens toC. fat D. parents D. hot D. our D. How D. practises D. large D. under D. or D. stands up D. sorry 查看答案
题型：判断题 下列说法正确的是（ ）A．那英善唱女低音，刘欢长于男高音．这里的“高、低”是声音的音调B．儿歌“月光光，照地堂”．从歌词里，我们可以知道月亮是光源C．西施在河岸上，看到自己在水中的像．这是光折射形成的D．掩耳盗铃的寓言故事，讲述了在声源处减弱噪声 查看答案
题型：判断题 雨后初晴的夜晚，地上有积水，当我们迎着月光走时，地上发亮处是积水，这是因为A．地上暗处是光发生镜面发射B．地上发亮处是光发生镜面发射C．地上发亮处是光发生漫反射D．地上发亮处和暗处都发生镜面反射 查看答案
题型：判断题 某患者接受抗哮喘的药物治疗，医师称所用药物具有较高的治疗指数。下面说法中，对有关该药治疗指数的最佳描述是（）A.该药的血浆药物浓度需要严密监测B.该药能够通过血-脑屏障C.该药具有广泛的药物与药物之间的相互作用D.该药无严重的不良反应E.该药药效的最大效应大 查看答案