蜂鸣器响
改变蜂鸣器的频率，通过改变延时时间
蜂鸣器的时间要是是靠延时来完成的-Buzzer buzzer ring to change the frequency by changing the delay time if the buzzer is the time to be completed by the time delay
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.002011s ]
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:0.089958s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001915s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001872s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.002276s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003659s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.002092s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003292s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015220s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002488s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 218042 [ RunTime:0.001257s ]
