3分-|||-又PNC平面PMN,-|||-所以P∥平面FDC.-|||-…5分-|||-(2)由ABCD是直角梯形,∠ADC=∠DAB=90°,AB=AD=2,BC=5,-|||-得CD=3,………-|||-………6分-|||-又平面PCD⊥平面ABCD,FC⊥CD,FC⊥平面ABCD.-|||-VA-a=Vy-AD-|||-xAB x AD x FC=-|||-x×2x2x2--|||-11-|...
解:(1)BE=AF且BE⊥AF.∵四边形ABCD是正方形∴AB=AD=CD,∠BAD=∠D=90°∵DE=CF∴AE=DF∴△BAE△ADF(SAS)∴BE=AF,∠ABE=∠DAF∴∠ABE+∠AEB=∠DAF+∠AEB=90°∴BE⊥AF(2)①MN、EF还相等.理由:如图,作AR//EF,交CD于R,作DT//MN,交BC于T,DT与AR交于点O∵四边形ABCD是正方形∴AB//CD,AD...
∴四边形MPNC是平行四边形（两组对边分别平行的四边形是平行四边形）∴∠PMC=∠PNC（平行四边形对角相等）∴∠BMC-∠PMC=∠ENC-∠PNC 即∠BMP=∠PNE 在△BMP与△PNE中 BM=PN ∠BMP=∠PNE PM=EN ∴PB=PE，∠PBM=∠EPN ∵NP‖MC，∠BMC=90° ∴∠MJP=90° ∴∠EPN+∠BPJ=∠MBP+∠BPJ=...
如需询价,请直接联系品牌负责人并烦请告知如下信息:所需产品品牌+型号+数量+贵司名称/电话/传真/联系人 ,我们将尽快给您提供报价! 编码器: 德国TWK编码器、 意大利ELCIS编码器; 德国库伯勒kubler, 德国兰宝 LENORD+BAUER编码器、 法国雷恩RADIO-ENERGIE编码器-测速电机、 德国霍伯纳HUBNER编码器 ; 德国Hohner编码器...
DF40HC(3.0)-100DS-0.4V(51) BLM31PG121SN1L 1210B475K101NT CGA0603X5R105K160JT 15N10 70Y10207 TLP155E(TPL,E B0505S-1WR3 GZ1608D601TF SP706SEN-L/TR PESD2CAN STM32F103RBT6 CC1206KKX5R8BB226 CL05B104KB54PNC IRF3710PBF LM35-20B12 ...
View Shadcn UI 是一个基于 Tailwind CSS 构建的 Vue3 组件库。. Contribute to devlive-community/view-shadcn-ui development by creating an account on GitHub.
We read every piece of feedback, and take your input very seriously. Include my email address so I can be contacted Cancel Submit feedback Saved searches Use saved searches to filter your results more quickly Cancel Create saved search Sign in Sign up Reseting focus {...
HEINZINGER PN1500-400 PNCPOSWERMA TYP.57005255 NR.640balluff BDG 6110-14S-05-36000-65 STAHLWILLE 40082424 BOSSARD BN689 2.49*4.76 A2 1259105REFCO R6950,9881547 MEGADYNE 16AT5-390 PMA Protect hose PIST-17B.50 NW17 10003605 TESA 310002 HELUKABEL ?22574?servomex 2700 EPE D-68775 2.0030H 10XL...
integrity sha512-yaduQFRKLXYOGgEn6AZau90j3ggSOyiqXU0F9JZfeXYhNa+Jk4X+s45A2zg5jns87GAFa34BBm2kXw4XpNcbdg== dependencies: escape-string-regexp "^1.0.5" file-entry-cache@^5.0.1: version "5.0.1" resolved "https://registry.yarnpkg.com/file-entry-cache/-/file-entry-cache-5.0.1.tg...
姐妹,大运河肥皂去污力很强,白色衣服的救星,油渍污渍洗的很干净#好物推荐🔥 #污渍轻松去除 8 天呐,商家你真的不亏吗?7.9居然到手5大包婴儿乳霜纸,姐妹干净来薅羊毛呀#母婴好物 #好物推荐🔥 天呐,商家你真的不亏吗?7.9居然到手5大包婴儿乳霜纸,姐妹干净来薅羊毛呀#母婴好物 #好物推荐🔥 6 家里牙刷...