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ge=he∵ef⊥ab,ae=be∴fa=fb同理。

7．如图，ea⊥ab，bc⊥ab，ab=ae=2bc，d为ab的中点，有以下判断：①de=ac。

解析：过b作bf∥ae，则cd∥bf∥ae.根据平行线的性质即可求解．过b作bf∥ae，则cd∥bf∥ae，∴∠bcd＋∠1＝180°.又∵ab⊥ae，∴ab⊥bf，∴∠abf＝90°，∴∠abc＋∠bcd＝90°＋180°＝270°.故答案为270.。

ALLENBRADLEY1768-L45RQANS21768L45

ABAllen-BradleyHMI2711P-T15A82711PT15A8New

ALLENBRADLEY1326AB-A720E-21RQANS11326ABA720E21

ALLENBRADLEY2711-B6C3RQAUS12711B6C3

ALLENBRADLEY2711-K10G10RQAUS12711K10G10

ALLENBRADLEY2711P-K12A1RQAUS12711PK12A1

ALLENBRADLEY1334-GOBRQAUS11334GOB

ALLENBRADLEY1785-L20C15/ERQANS11785L20C15E

ALLENBRADLEY1336F-CWF200-AN-ENRQANS11336FCWF200ANEN

AllenBradley1391-DES45-DI-AQBServoDrive

ALLENBRADLEY1336-CAP-SP9ARQANS11336CAPSP9A

1PCSALLENBRADLEY1757-SRM/BCONTROLLOGIXSYSTEMREDUNDANCYPROCESSLOGIXNEW

ALLENBRADLEY6180CS-NV2SERIESB*NEWNOBOX*

ALLENBRADLEY1336-BDB-SP57DRQAUS11336BDBSP57D

ALLENBRADLEY1336-BDB-SP34DRQANS11336BDBSP34D

ALLENBRADLEY2711-T10G15RQANS12711T10G15

ALLENBRADLEY2711P-T10C15A2RQAUS12711PT10C15A2

NewAllenBradley20BD096A3ANNADC0/B20BD096A3ANNADC020BD096A3ANNADC0

联系地址：桂林市上海路15 号a5座三楼304 室。

纸质版响应文件递交地点：桂林市上海路15 号a5 座302 室。

地址：桂林市上海路15号a5座三楼304室。

联系地址：桂林市上海路15 号a5 座三楼304 室。

ALLENBRADLEY1336F-B025-AN-ENRQAUS11336FB025ANEN

AllenBradley150A97NCDNSFP**GENUINE**AB150A97NCD

ALLENBRADLEY5250-MLP1RQAUS15250MLP1

ALLENBRADLEY1775-MEF--

AllenBradley1400-ELTC6Panelview

ALLENBRADLEY2711-T10G15SERBREVAFRN4.20PANELVIEW*NEWINABOX*

ALLENBRADLEY2711-T10G15SERAREVLFRN4.20PANELVIEW*NEWINABOX*

AllenBradleyPanelview10002711-T10G8L1SerDRevAFRN4.43

comablet","b600016gwifi8寸铂银","2040","电询" "yoga11s","i3-40204g128g固态11寸平板电脑二合一橙色","4850","" "yoga11s","i3-40204g128g固态11寸平板电脑二合一银色","4850","" "yoga13","i5-33374g128g固态13寸平板电脑二合一橙色","6180","" "yoga13","i5-33374g128g固态13寸平板电脑二合一银色","6250","电询" "yoga211","n35204g500g11寸平板电脑二合一橙色","4080","" "yoga213","i3-40104g500g13寸平板电脑二合一灰色","5260","" "yoga213","i5-42004g500g13寸平板电脑二合一 橙色 ","6180","" "yoga213","i5-42004g500g13寸平板电脑二合一 银色 ","6180","" "flex14","i3-4010/4g/500g/2g独显/14。

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