在本教程中，将检验 AutoCAD Civil 3D 用户界面的某些主要组件。AutoCAD Civil 3D 用户界面增加了一些用于创建和管理土木工程设计信息的工具，从而增强了标准 AutoCAD 环境的功能。标准 AutoCAD 功能（如命令行和功能区）在 AutoCAD Civil 3D 中的工作方式与在 AutoCAD 中的工作方式相同。有关详细信息，请参见 AutoCAD Civil 3D 帮助主题“Civil 3D 用户界面”
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001342s ]
SELECT `a`.`aid`,`a`.`title`,`a`.`create_time`,`m`.`username` FROM `jrk_downrecords` `a` INNER JOIN `jrk_member` `m` ON `a`.`uid`=`m`.`id` WHERE `a`.`status` = 1 GROUP BY `a`.`aid` ORDER BY `a`.`create_time` DESC LIMIT 10 [ RunTime:0.106989s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.004769s ]
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SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001863s ]
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SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.002017s ]
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SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001529s ]
SELECT `a`.*,b.name as ctitle FROM `jrk_articles` `a` INNER JOIN `jrk_articles_cate` `b` ON `a`.`cate_id`=`b`.`id` WHERE `a`.`is_show` = 1 AND `a`.`id` = '516313' LIMIT 1 [ RunTime:0.000558s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.016314s ]
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