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单选题 瑞士教育家皮亚杰提出了 "认知发展阶段理论",认为儿童的认知发展分为感知运动阶段、前运算阶段、具体运算阶段和形式运算阶段.这一理论对小学教育的启示是( )
学科：小学教育学
时间：2025-12-21 10:42:51
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题目1单选题
当电气设备出现异常运行状态时,电力系统继电保护自动、()、有选择地(),让值班人员进行处理,或切除继续运行会引起故障的设备. [Single-choice question] When electrical equipment is in abnormal operation state, the relay protection of power system will automatically, ( ) and selectively ( ), so that the personnel on duty can handle it or cut off the equipment that may cause faults if it continues to operateA. 及时,跳闸 Timely, tripB. 快速,跳闸 Quickly, tripC. 及时,发出信号 Timely, send out signalsD. 快速,发出信号 Quickly, send out signals
题目2多选题
在电气设备出现故障时,电力系统继电保护应该()地借助断路器跳闸将故障设备从系统中切除,以避免故障设备继续遭到破坏,保证系统其余非故障部分能继续运行. [Multiple-choice question] When electrical equipment fails, the relay protection of power system shall disconnect the faulty equipment from the system by ( ) tripping the circuit breaker to avoid further damage to the faulty equipment and ensure that other non-fault parts of the system can continue to operateA. 自动 AutomaticallyB. 快速 QuicklyC. 无选择 RandomlyD. 有选择 Selectively
题目3多选题
继电保护对()起着极其重要的作用,是电力系统必不可少的组成部分. [Multiple-choice question] Relay protection plays an extremely important role in ( ) and is an essential part of the power systemA. 保证系统安全运行 Ensuring the safe operation of systemB. 保证电能质量 Ensuring power qualityC. 防止故障扩大 Preventing the fault from expandingD. 防止事故发生 Preventing accidents
题目4多选题
当电网出现()状况时,电力系统继电保护应跳闸并发信号. [Multiple-choice question] When the power grid has ( ) conditions, the relay protection of the power system shall trip and send signalsA. 线路过载 Line overloadB. 线路杆塔被洪水冲倒 Line towers are washed down by floodC. 雷击到220kV线路A相 Lightning strike to Phase A of 220kV lineD. 风筝线搭在110kV线路AB相 Kite wire is connected to Phase AB of 110kV line
题目5多选题
电力系统继电保护的特点是(). [Multiple-choice question] The relay protection of power system is characterized by ( )A. 动作缓慢 Slow actionB. 具有调节反映电能质量指标的电气量的功能 Be capable of adjusting the electrical quantity reflecting the power quality indexC. 具有非调节性 Non-regulatoryD. 动作迅速 Quick action
题目6多选题
电力系统继电保护的基本作用,描述正确的是(). [Multiple-choice question] Which of the following statements about basic functions of relay protection in power system are correctA. 不正常工况时发出信号 Send out signals under abnormal working conditionsB. 自动、迅速、有选择性地切除故障 Automatic, rapid and selective fault removalC. 面对故障,不切除,而是先调节 In face of faults, do not remove, but adjust firstD. 自动、迅速、有选择性地切除不正常设备 Automatic, rapid and selective removal of abnormal equipment
题目7判断题
继电保护的基本原理即利用正常运行与区内外短路故障时,电气参数变化的特性构成保护的判据,根据不同的判据就构成不同原理的继电保护. [True or false question] The basic principle of relay protection is to use the characteristics of electrical parameter changes during normal operation and internal and external short-circuit faults to form the criterion of protection, and different principles of relay protection are formed according to different criteriaA. 正确B. 错误
题目8判断题
继电保护执行部分的作用是执行保护的功能,即设备正常运行时保护不动,设备故障时保护动作于跳闸,而设备异常时保护动作于发信号. [True or false question] The function of the relay protection execution part is to execute the protection function, that is, the protection does not operate when the equipment operates normally, the protection operates on tripping when the equipment fails, and the protection operates on signaling when the equipment is abnormalA. 正确B. 错误
题目9判断题
只要继电保护动作出口,网络故障立即被切除. [True or false question] As long as the relay protection action is output, the network fault will be removed immediatelyA. 正确B. 错误
题目10单选题
美国教育家杜威是实用主义教育学的代表人物,其提出的 "教育即生活""学校即社会""从做中学" 等思想,深刻影响了现代教育.下列做法中,最符合杜威 "从做中学" 教育思想的是( )A. 教师在课堂上系统讲解数学公式,让学生背诵记忆B. 组织学生参与 "校园义卖" 活动,在筹备、售卖过程中学习数学计算、沟通技巧C. 要求学生课后完成大量练习题,巩固课堂所学知识D. 播放教育纪录片,让学生通过观看了解社会现象
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