如何制作优秀微课
如何制作优秀微课? 一、微课 1、微课定义 微课是指基于教学设计思想,使用多媒体技术在五至十分钟以内 就一个知识点进行针对性讲解、模拟一对一教学情景的一段视音频。 这些知识点,可以是教材解读、题型精讲、考点归纳;也可以是
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如何制作优秀微课? 一、微课 1、微课定义 微课是指基于教学设计思想,使用多媒体技术在五至十分钟以内 就一个知识点进行针对性讲解、模拟一对一教学情景的一段视音频。 这些知识点,可以是教材解读、题型精讲、考点归纳;也可以是
第 1 页 共 2 页 角处理小专题 汪曾祺学校 段广猛 问题 1:如图,已知点 A(1,3),点 B(2,1),试猜想∠AOB 的度数,并证明你的猜 想.(确定性;一题多解) y x A B O 问题
巩固和发展良好政治生态 ——廉政微党课 同志们: 大家受党和人民的委派,主政一方、主管一线,责任重大、 使命光荣。市委对大家高度信任、寄予厚望。但是,信任不能代 替监督,特别是大家作为党组织书记,对一个地方、一个部门的
我的第一本紫微斗数书 奶瓶级飞星算命术大释放 紫薇白娘子 虚晴 2011 哄小宝宝力作 出品 白娘子斗数日月谭 QQ 群:136108750 2 这是一本什么书 可以一眼看穿自己的算命书 简单到不能再简单的算命书
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请参阅最后一页的股票投资评级说明和法律声明 2018 年 4 月 2 日 证券研究报告 5G 专题报告 5G 渐行渐近,关注产业链上下游投资机会 主要观点: ◆5G 标准制定工作有序进行,预计 2020 年完成。5G 标准由
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The line graph compares average yearly spending by Americans on mobile andlandline phone services from 2001 to 2010.It is clear that spending on landline phones fell steadily over the 10-year period,while mobile phone expenditure rose quickly. The year 2006 marks the point atwhich expenditure on mobile services overtook that for residential phone services.In 2001, US consumers spent an average of nearly $700 on residential phone services,compared to only around $200 on cell phone services. Over the following five years,average yearly spending on landlines dropped by nearly $200. By contrast,expenditure on mobiles rose by approximately $300.
.1673 -5013 .2012 .04 .017 微 柱 凝胶 法交 叉配 血不 合原 因分 析 宋雪珍1 宋雪梅2 孙凌云1 任小宁1 宋旗悦2 1(威海市立医院输血科 ,山东威海
Low power consumption Low voltage drop Low temperature coefficient Low Quiescent Current: 1.5uA at 6V Output voltage accuracy: tolerance ±2%Applications Battery-powered equipment Reference voltage sources Cameras,video cameras Portable AV systems Mobile phones Portable games
Features Low power consumption Low temperature coefficient Built-in hysteresis characteristic High input voltage (up to 15V) Output voltage accuracy: tolerance ±2% TO92, SOT89 SOT23-3 and SOT23 package
Features Low power consumption Low temperature coefficient Built-in hysteresis characteristic High input voltage (up to 10V) Output voltage accuracy: tolerance ±1% or ±2% TO92, SOT89, SOT23-3 ,SOT23 and SOT23-5package
Features 2V to 24V Input Voltage Up to 28V Output Voltage Integrated 80mΩ Power MOSFET 1.2MHz Fixed Switching Frequency Internal 4A Switch Current Limit Internal Compensation Thermal Shutdown Output Adjustable from 0.6V Available in a 6-pin SOT-23 package
Features Low power consumption:25uA (Typ.) Low voltage drop:0.2V@100mA(Typ.) Low output noise(27uVRMS) Standby Mode: 0.1uA Low temperature coefficient Output Voltage Range: 0.9V~5V Good line Regulation:0.05%/V High Ripple Rejection: 70dB@1kHz(Typ.) High input voltage (up to 7V) Output voltage accuracy: tolerance ±2% Build-in Enable/Output Current Limit circuit
Features Low power consumption Low voltage drop Low temperature coefficient High input voltage (up to 18V) Output voltage accuracy: tolerance ±2% TO92, SOT89, SOT23-3 and SOT23 packageApplications Battery-powered equipment Communication equipment Audio/Video equipment
Features Low power consumption Low voltage drop Low temperature coefficient High input voltage (up to 18V) Output voltage accuracy: tolerance ±2% TO92, SOT89 ,SOT23-3and SOT23 packageApplications Battery-powered equipment Communication equipment Audio/Video equipment
Features Low voltage drop: 0.17V@100mA High input voltage: 15V Low temperature coefficient Large Output Current: >0.35A Low Quiescent Current: 1.0uA Output voltage accuracy: tolerance ±2% Built-in current limiter SOT89 and SOT23-3 package
Features External parts: Coil, capacitor Output voltage: Settable to between2.1V to 5.5V in 0.1V steps Maximum Oscillationfrequency :300KHz Accuracy of ±2% High efficiency :95% Package:SOT23,SOT23-3,SOT23-5,SOT89and TO92
Features Low voltage drop: 0.17V@100mA High input voltage: 15V Low temperature coefficient Large Output Current: >0.5A Low Quiescent Current: 1.0uA Output voltage accuracy: tolerance ±2% Built-in current limiter SOT89,SOT89-5,SOT23-3 and SOT23-5packagesApplications Battery-powered equipment Hand-Hold Equipment GRS Receivers Wireless LAN