全彩图解电工技术与技能-畅读网

　　　　

全彩图解电工技术与技能

作者：韩雪涛

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科学技术 >> 工业技术

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内容简介:

本书以电工领域的实际岗位需求作为编写目标，从岗位就业的实际需求出发，对电工技术的特和技能应用行细致的归纳与整理，按照读者的学习习惯和技能培训特，将电工技术与技能划分成7个模块。书中的主要内容包括电工电路的基础知识、电工常用工具和仪表的功能与应用、电气部件的功能特与检测应用、线路加工与电气设备的安装、供配电线路的特与检修调试、照明控制线路的功能与检修调试、电动机控制线路的特与检修调试。书中所选知识和技能均来源于实际工作，能够确保学习的实际效果。<br/>

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SELECT `id`,`name` FROM `ls_goods_category` WHERE `id` = 5 LIMIT 1 [ RunTime:0.005127s ]
SELECT `id`,`name` FROM `ls_goods_category` WHERE `id` = 45 LIMIT 1 [ RunTime:0.001003s ]
SELECT `a`.*,`ap`.`width`,`ap`.`height` FROM `ls_ad` `a` INNER JOIN `ls_ad_position` `ap` ON `a`.`pid`=`ap`.`id` WHERE `pid` = 11 AND `ap`.`client` = '2' AND `a`.`status` = '1' AND `a`.`del` = '0' AND `ap`.`status` = '1' AND `ap`.`del` = '0' ORDER BY `sort` DESC,`id` DESC [ RunTime:0.003810s ]
SELECT `a`.*,`ap`.`width`,`ap`.`height` FROM `ls_ad` `a` INNER JOIN `ls_ad_position` `ap` ON `a`.`pid`=`ap`.`id` WHERE `pid` = 14 AND `ap`.`client` = '2' AND `a`.`status` = '1' AND `a`.`del` = '0' AND `ap`.`status` = '1' AND `ap`.`del` = '0' ORDER BY `sort` DESC,`id` DESC [ RunTime:0.004620s ]
SELECT * FROM `ls_goods` WHERE `del` = 0 AND `status` = 1 AND `create_time` <= 1762378217 ORDER BY `create_time` DESC LIMIT 5 [ RunTime:1.261756s ]

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