建筑材料与检测-畅读网

　　　　

建筑材料与检测

作者：杨建华

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mobi/epub/pdf/awz3

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科学技术 >> 医学/建筑

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内容简介:

“建筑材料与检测”课程是高职高专土建施工和建设工程管理两大类专业学生必须学习的一门专业基础课。本教材通过对建筑材料检测基本知识、水泥、骨料、混凝土、预拌砂浆、建筑钢材、防水材料等方面内容进行讲解，通过学习和训练，培养学生掌握常用建筑材料的基本性能能和坚持方法，学会阅读标准，学会根据标准规范坚持建筑材料性能并判断质量好坏。

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SELECT `id`,`name`,`pid`,`image`,`level`,`is_show`,`is_recommend` FROM `ls_goods_category` WHERE `is_show` = 1 AND `del` = 0 AND `level` = 2 ORDER BY `id` ASC,`sort` DESC [ RunTime:0.006245s ]
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SHOW FULL COLUMNS FROM `ls_nav` [ RunTime:0.007534s ]
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SHOW FULL COLUMNS FROM `ls_friendly_link` [ RunTime:0.008215s ]
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SHOW FULL COLUMNS FROM `ls_ad` [ RunTime:0.014307s ]
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SELECT `id`,`name` FROM `ls_goods_category` WHERE `id` = 47 LIMIT 1 [ RunTime:0.004693s ]
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:0.003342s ]
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:0.008415s ]
SELECT * FROM `ls_goods` WHERE `del` = 0 AND `status` = 1 AND `create_time` <= 1748116115 ORDER BY `create_time` DESC LIMIT 5 [ RunTime:1.970619s ]

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