关于勾股定理
过点A作AN⊥RQ于点N，
由于∠ACB=90°，∠BAC=30°，四边形HACG、BCFK均为正方形，
所以∠HAC=∠HGC=∠AHG=∠BCF=∠FCG=90°，HA=AC=CG，BC=CF，
则△GCF≌△ACB（SAS），则∠CGF=∠BAC=30°，则∠HGQ=180°-∠CGF-∠HGC=180°-30°-90°=60°，
又由于∠HAN=180°-∠BAC-∠HAC=180°-30°-90°=60°，∠ANH=90°，
则∠AHN=30°，
所以∠Q=180°-∠AHN-∠AHG=180°-30°-90°=60°=∠HGQ，
则∠P=30°，且△QHG为等边三角形，
所以QH=HG=QG=HA=AC=CG，
由于在Rt△ABC中，∠ACB=90°，∠BAC=30°，AB=4，
则AC=AB×cos∠BAC=4×(√3/2)=2 √ 3，
由于四边形HACG为正方形，
所以HA=AC=2√ 3=QH，
在Rt△ANH中，由于∠AHN=30°，所以AN=HA/2=√ 3，HN=HA×cos∠AHN=2√ 3×(√ 3/2)=3，
又由于四边形ADEB是正方形，∠R=90°，AN⊥QR于点N，则四边形ANRD为矩形，
所以NR=AD=AB=4，
所以QR=QH+HN+NR=2√ 3+3+4=7+2√ 3，
所以PQ=2QR=14+4√ 3，
PR=QR×tan∠P=(7+2√ 3)×(√ 3)=7√ 3+6，
Worm/Win32.Runouce.b[Email]的网络行为
协议：TCP
端口：139 445
描述：通过以上端口发送恶意邮件，邮件内容：
HELO btamail.net.cn
MAIL FROM: imissyou@btamail.net.cn
RCPT TO:
DATA
TO:
SUBJECT: A-738DF22C9CA04 is comming!
MIME-Version: 1.0
--#BOUNDARY#
Content-Type: text/html
--#BOUNDARY#
MIME-Version: 1.0
Content-Type: audio/x-wav; name=pp.exe
Content-id: THE-CID
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经解密得到数据： HELO btamail.net.cn
MAIL FROM: imissyou@btamail.net.cn
RCPT TO:
DATA
FROM: A-738DF22C9CA04@yahoo.com
TO:
SUBJECT: A-738DF22C9CA04 is comming!
MIME-Version: 1.0
Content-type: multipart/mixed; boundary=#BOUNDARY#
--#BOUNDARY#
Content-Type: text/html
Content-Transfer-Encoding: quoted-printable
--#BOUNDARY#
MIME-Version: 1.0
Content-Type: audio/x-wav; name=pp.exe
Content-Transfer-Encoding: base64
Content-id: THE-CID
MZP ?@ ????L?悙This program must be run under Win32 $7PEL ?饨巵 D @ ` 0N@ CODE `DATA @?idata 0 @?reloc?@? @?%00@(08000F0F0KERNEL32.dllSleep 0`桄 媡$ ?ah @瞄Y? 佹???f?MZu?穨¬???L?悙This program must be run under Win32 $7圥E L ?饨 巵 @ P 0 N @ SCODE `DATA @ ?idata 0 @ ?reloc @ @ P???%00@??0 80 00 F0 F0 KERNEL32.dll Sleep? 0???G 缨 P嬆j PS?8X腱 ?G?QP嬆j PS?8XY怦胝瞄侅 3鰦黤? ??f?鲳???釆 B?纔麒 发送消息?企觲Xj?缨W嬝?樎褀Xj S?缨B嬝??褀_侅 Th j S?伳 纔 Th j S?F冩u 伳 陕 ?B$?Xh??镼??葖] 侅 孅?Runonce^h ?骢nyXTWjjVS?X??nyXjjj jS??A鑞yXh Wj jVS?胙槿?璱鑧X? jh?¬?缨,嬝?存wXj??Y兞 悙愯 *u鑧Xj Q?陕 槿`P L$?兝 ?婸 ?`?埘 ??销ff廆 媢 媫 婱 帖a陕 槿`婨 jPPj?恒陕
解密之后发现该内容为PE可执行文件，病毒调用系统自带的Outlook Express发送恶意邮件，病毒利用发送恶意邮件来传播自身。
注：%System32%是一个可变路径。病毒通过查询操作系统来决定当前System文件夹的位置。
%Windir% WINDODWS所在目录
%DriveLetter% 逻辑驱动器根目录
%ProgramFiles% 系统程序默认安装目录
%HomeDrive% 当前启动的系统的所在分区
%Documents and Settings% 当前用户文档根目录
%Temp% Documents and Settings当前用户Local SettingsTemp
%System32% 系统的 System32文件夹
Windows2000/NT中默认的安装路径是C:WinntSystem32
windows95/98/me中默认的安装路径是%WINDOWS%System
windowsXP中默认的安装路径是%system32%
哪款杀毒软件的杀灭病毒的效果比较好啊???
通常腾讯手机(电脑)管家，360手机(电脑)卫士这些都很不错。距网上反应，360捆绑下载很多，现在一般采用腾讯手机(电脑)管家不错，综合方面比较优秀。通常腾讯手机(电脑)管家，360手机(电脑)卫士这些都很不错。距网上反应，360捆绑下载很多，现在一般采用腾讯手机(电脑)管家不错，综合方面比较优秀。
初中数学:圈三怎么证明?谢谢
（3）证明：过点G作GN平行AE，GN与HM的延长线交于N
所以角MAE=角N
角MEA=角MGN
角EAG十角AGN=180度
因为四边形ABDE和四边形ACFG都是正方形
所以AB=AE
角BAE=90度
AC=AG
角CAG=90度
因为角BAC十角BAE十角EAG十角CAG=360度
所以角BAC十角EAG=180度
所以角BAC=角AGN
因为AH是三角形ABC的高
所以角AHC=90度
因为角CAH十角AHC十角ACB=180度
所以角CAH十角ACB=90度
因为角CAH十角CAG十角GAN=180度
所以角CAH十角GAN=90度
所以角ACB=角GAN
因为AC=AG（已证）
所以三角形ABC和三角形GNA全等（ASA）
所以AB=GN
所以AE=GN
所以三角形MAE和三角形MNG全等（ASA）
所以ME=MG
所以M是EG的中点
所以AM是三角形AEG的中我
所以角BAC=角AGN
殬这个字是什么意思?怎么读?英文是啥?
殬 拼音:dù 注音:ㄉㄨˋ部首:歹,部外笔画:13,总笔画:17五笔86&98:GQLF 仓颉:MNWLJ 郑码:ARBU笔顺编号:13 54252 21121 43112 四角号码:16241 UniCode:CJK 统一汉字 U+6BAC基本字义古同“斁 ”，败坏：“彝伦攸～。”方言集汇客家话：[梅县腔] du5康熙字典【辰集下】【歹字部】殬《唐韵》当故切《集韵》多故切，?音妒。《说文》败也。《书·洪范》彝伦攸殬。○按今《书》本作斁。斁本有亦、妒二音，《正字通》同?，不同?，非。 又《刘勰·新论》小利，大利之殬。小?，大祸之津。 《集韵》或作?。亦省作睾。说文解字1.清代陈昌治刻本『说文解字』：【卷四】【歺部】殬败也。从歺睾声。《商书》曰：“彞伦攸殬。”当故切2.清代段玉裁『说文解字注』：败也。经假斁为殬。云汉郑笺云。斁，败也。孔颖达引洪范。彝伦攸斁。从?。??声。当故切。五部。商书曰。彝伦攸殬。洪范文。今作斁者，葢汉人以今字改之。许所云者，壁中文也。彝，张次立本作夷。
英文就实在不知道了哦！找的很辛苦，给个悬赏吧