%PDF-1.7 %忏嫌 11 0 obj << /Type /Page /Parent 1 0 R /LastModified (菿>46U 寤貣@擽u哥) /Resources 2 0 R /MediaBox [0.000000 0.000000 595.276000 841.890000] /CropBox [0.000000 0.000000 595.276000 841.890000] /BleedBox [0.000000 0.000000 595.276000 841.890000] /TrimBox [0.000000 0.000000 595.276000 841.890000] /ArtBox [0.000000 0.000000 595.276000 841.890000] /Contents 12 0 R /Rotate 0 /Group << /Type /Group /S /Transparency /CS /DeviceRGB >> /Annots [ 6 0 R ] /PZ 1 >> endobj 12 0 obj <> stream s%牞懒!眚m肬U绰鷗舄Y65g]$=鯟V虸i甈隅儉?嫈椺I嬞=$g? d葅潤洅遯侖]廤Gn鷰簜M.~X"q<靤o`v牔頶豢醦7茂籮$齻c I$78请嬽〦(叱F>朌乇蛬[滊uFд頸髏猓8岔(坥5瘾钏招焐訖y瘝4UF櫰 侃薒B恏農k L墼H隉h绺L|砓z#塓跉壈p犵浀 揲/:找*W0J%Q芖5劙I魷坾澖a覰捺宎V+绘 鵆TN峔xRk_3咢+Yг滪n;爥R .[蕵x,堎8M+q+ 櫻1/?祔*g>藃踹\邚*Z^B镊]}&嫨挭檯 鸤D鲾4永瑓'~pI#d.`馱95躲W|,趩詞髿EVVku旴&R endstream endobj 13 0 obj << /Type /Page /Parent 1 0 R /LastModified (觻8裟!=^猇7&壵\(3) /Resources 2 0 R /MediaBox [0.000000 0.000000 595.276000 841.890000] /CropBox [0.000000 0.000000 595.276000 841.890000] /BleedBox [0.000000 0.000000 595.276000 841.890000] /TrimBox [0.000000 0.000000 595.276000 841.890000] /ArtBox [0.000000 0.000000 595.276000 841.890000] /Contents 14 0 R /Rotate 0 /Group << /Type /Group /S /Transparency /CS /DeviceRGB >> /Annots [ 8 0 R ] /PZ 1 >> endobj 14 0 obj <> stream 6祕箸%踅簋 -衸檺酷}溎粱坔櫔蕢.`:.鵲-ihi>達蛪x咋綵譯陽賊9臁i鬰纂O佄:Q+/G蕿`/闫k劧寲%( Cwm磬7j覕i牰&rJ棬鬞兮  @鵒撎朣UdH{"E<|Tht 埑嬦标,-*枓W*fZbo>躘澚黦>M;撻( |^5借cLzw赦t怯彝$L+!↑鬁{m4儓=:癵V奘o厼ヲ=c R號J%#3苆(j/锛譎Z77漌瘣鍏蕽=譨睃g躠!录膙7G澩\F)l齰\稍崅帧缳漤悽荒纝w=帆曹?B租$桲2eE 莇極'`|,岦蠔x\vN/$┍D ˊ+茻1\鳟b 剆砣G&c齌+撅I0 mC}茍 診='?癰p癇茌z蕹y'^,!堀"僉昽蟓荮豉8;慆象lqW誢$6饙晏矋(鯁欋垰 .+q瘐 &V嚝岉您鲛煁C槚=]tFRa朅0k+hXW唏懗 骎抂陽-纠饙狩肍"зnI彜|④+產翡W1>Vc艛T~%沬穉p3\鋬篢{a貵蓤<擱萜缭疮_?i樠書炚X 紓2镐⿵夝7買q%md?侒'黔w-$j鱧^\'帥嗎 欑$Y蟿4}潾幋瘁窙n-Sc埽p?暚橶衖 F)榳Y友牚9X频 ? 敥顳(泉^D彃?0u鸐`椼冃8m拌拙-X>羨]竴*滼稟>卆酝6"c疭I嶫镢ZH夞x/T剨鏴v簉_<^屯d唐冶e+D嗭7K宜3!cю!4舷璳Y攘⌒樹罱牸'Q輂丯>>ccR磰>W?乆蜢﨤嶾飄-欉捫珚臖'孽╥臄瘃詀6諥?k泯稏`>繺糕a廈甠楾G!;山'`忪俤竀(! -a;攐肵&A^熉E舅弴y羘猛國孰;X>C?jm7狠阐匦逞p熬A1 垔y歜焰礏u猗1衧:釉魙4[] endstream endobj 15 0 obj << /Type /Page /Parent 1 0 R /LastModified (.ǔi鴗]F覉i厇⒒贺m) /Resources 2 0 R /MediaBox [0.000000 0.000000 595.276000 841.890000] /CropBox [0.000000 0.000000 595.276000 841.890000] /BleedBox [0.000000 0.000000 595.276000 841.890000] /TrimBox [0.000000 0.000000 595.276000 841.890000] /ArtBox [0.000000 0.000000 595.276000 841.890000] /Contents 16 0 R /Rotate 0 /Group << /Type /Group /S /Transparency /CS /DeviceRGB >> /PZ 1 >> endobj 16 0 obj <> stream [彠碞艧玉輜輱 踺1,挢i「 H娍D闥i抚t親鐭q载~甤(葪  深X.$舼i殎q一 y攦Py澐SH狁!|^5 ^ 熥捋伵F磟玅:v 甫1冢0q寝u乲{!ルx撶g崸E璜鋮豄z磻$0茺8O2躂w煴;魥Z襆$L羼h╗9氅 7q屙 bZ蠔=0>P;9L髌刨c;鍖嵁浌诇籏銲揓嗩$虴3&"5s蔴樇汗v5煢guu珳Y蝻e楑Y<賘N厓瓷l (喯>曚狆a鎌猨柲紈媌缗蕹黁捵a~嗖哑袷喗壽8 ^灘4久蜆櫦&$樾u洃 筠韟樿-楹鲉2吿+1旙欧1N7 驭廞鯹0-o1厳衾C,弄褠舵幭_/渫呔Z.S挧N倏z2t鱌缅饝|趦哞3Wfz琩6tnO6鉓胰︵H`6妰輁捩`%5)乪窙螸脙QY囡毃m笋撁E鑜隵z";暹.9峝衒 O4蘔ySA薈92鼲蘽 螈-訤<(> `bNVU尜 v穼揵聕蔘=悘渒aAr豐hgG嫼☆ endstream endobj 17 0 obj << /Type /Page /Parent 1 0 R /LastModified (烐[腄}V/o6z污) /Resources 2 0 R /MediaBox [0.000000 0.000000 595.276000 841.890000] /CropBox [0.000000 0.000000 595.276000 841.890000] /BleedBox [0.000000 0.000000 595.276000 841.890000] /TrimBox [0.000000 0.000000 595.276000 841.890000] /ArtBox [0.000000 0.000000 595.276000 841.890000] /Contents 18 0 R /Rotate 0 /Group << /Type /Group /S /Transparency /CS /DeviceRGB >> /PZ 1 >> endobj 18 0 obj <> stream 危b烜,qo档y焮6迥>4襉蘕泬招貽慳狩历睼 p*vn^n撆蟠靖硛Uk﹕懢粥l匍8&嬑$籃瘗u3胖翳^LY_翽0y捡竺亪$i|'-L釬6岫椊:9G儅.V釷Z莅賌{昹艃幈q: 燗a7v恩 >$:8勍z乮b僁繵>浌煴1湨wI2豚僽宥0s=:P_姖.p復峇趾N蚸6- $暰<+嬓W-氜I靭/IYO鎾珐G)凶蠻/WP4zF$壉; 颁k*饴2aU柶琽峎妢漃O瀯閚]鹜F団\橃;炙鯈咍_靴<觲罝董SS涶.窝袂[惖▊L跭簷正蓔t髀d鉖鼱=b)吙u'\牘[h詴濚v|^钀ju.1=濞:@湺著"t?&iぽ杵崨c徰L8;瞻E餤罵佺Q\sF A麕魠o畈L䴓希蟋r纹OQ*憂#愽懶湫 8w撋G緬/嶟洶燏{-&1颕qPm騽=盷7 1悑赍庸Qu饡!蓐惭$ 簙件愤ヤVIT荌段壨瞢措揊霉譕V0 FW鷥倥(程 带戋 endstream endobj 19 0 obj << /Type /Page /Parent 1 0 R /LastModified (vCQ` 啅致婥Y6hpy厹,) /Resources 2 0 R /MediaBox [0.000000 0.000000 595.276000 841.890000] /CropBox [0.000000 0.000000 595.276000 841.890000] /BleedBox [0.000000 0.000000 595.276000 841.890000] /TrimBox [0.000000 0.000000 595.276000 841.890000] /ArtBox [0.000000 0.000000 595.276000 841.890000] /Contents 20 0 R /Rotate 0 /Group << /Type /Group /S /Transparency /CS /DeviceRGB >> /PZ 1 >> endobj 20 0 obj <> stream u&嘫干z軪=b譊匊絴@ 3搎MV_朧幾儷浹鈷房鎽 7z禀圆苤-燾^WKq-樢 V5l箔绻M实M4泿1ㄘ獛蔻讱 1軨i蓟駧%3瀖渌)臾忭t嫳傝驱(7bQ`|( so(挨畸E[0銝埁%栩Xd"耡柊阷柩骩鷪>汖蝯欝Qg>兾<倪4髷SO|vp懅? 塢狙h 峒!^q竝hU縤U>侐N謭譠Ou%峿嬴EK'乙邸 v衃\虤2s:[湩srU_䥺鋙xr捹汌賶騲>q1铰眑<2&鏹ˊ頨3&▁Tq窯N1束|zgTt鞠oU縳怒_S捤祜差就!n犥鏭o齋r睯j1;(^牋6*bs≈G櫎區蜽R餞O g仚9綱L旪?xW~讨UO恈斠T+ -嫡啽!:奕k奘ㄣ翎沝8泿UW沌訛Yr舜崋耗(螡D辦褠B_麭|嗖`嶥I󋰗姏钨'卸扶?8H5KO +瘲狵冐莳斩-i(豎霷<╟)/T4 ふ:z!@5愱躤砀儥Znu\'l!樷 澊o蓳蕲D羼珒)跎] 螣IⅤ謘&=6$-鄊-袭s鲦侬W-F杄p+烒-妇虤8脍#OI:柺[L/U鵳甂綆植^.1攄rp%惩霫i+栐蘦d*饯O樢癖∫颷洽4eI贯@Z[挼Н諅蟢潥滷覰綌 endstream endobj 21 0 obj << /Type /Page /Parent 1 0 R /LastModified (Kz仂C演%矝Z8杄=&.) /Resources 2 0 R /MediaBox [0.000000 0.000000 595.276000 841.890000] /CropBox [0.000000 0.000000 595.276000 841.890000] /BleedBox [0.000000 0.000000 595.276000 841.890000] /TrimBox [0.000000 0.000000 595.276000 841.890000] /ArtBox [0.000000 0.000000 595.276000 841.890000] /Contents 22 0 R /Rotate 0 /Group << /Type /Group /S /Transparency /CS /DeviceRGB >> /PZ 1 >> endobj 22 0 obj <> stream :遾銜s@鐓醫:O骚4v醺!糥]塄鳽铯囪欚aC j.币W诂 踉諙+詥燱]硶b*+5鬎壾_3#<{hV成U.)r)3羅DS 皎M╡-鍏7f闪r)<簐罠8Q摓鴨礣,*絑佂识q;鉇%t濔%kcD鷒寠炰c|縼"#衏G晠Bo怚窏M'塴稏溝慻鼄V艼PざROY骬_崗,f緈攋3 惩賋>釬b鲔MT)EL}菨敚i漙!Fk{w-愴セ z讣#斋葛矷厑=欁笺P*鷍高Hry腚B 0 择矠Ca嶍塝8$獆愱~Rr鶑绗濟醋/kb疰辞3g╓疠漆瀼x酳v䦂M'嗤酌瘘.2氢;粄>寳G!5xq握Ee;渨暘 (溵!嵼番幡I热t'鰖栙Q&F!U怜-閜紒蠟,H!明g愔縗,弳&25甲愣$襡诜淞皞瞴羛/;'竮腨F餜慗禌稄#蚌丞煓㧏]逮泊k贱鶸bS茞y讪"Q默傔wY埛 9h涡踻w惻.bkN endstream endobj 23 0 obj << /Type /Page /Parent 1 0 R /LastModified (U& #Uc個穩饰^A鳿r稵) /Resources 2 0 R /MediaBox [0.000000 0.000000 595.276000 841.890000] /CropBox [0.000000 0.000000 595.276000 841.890000] /BleedBox [0.000000 0.000000 595.276000 841.890000] /TrimBox [0.000000 0.000000 595.276000 841.890000] /ArtBox [0.000000 0.000000 595.276000 841.890000] /Contents 24 0 R /Rotate 0 /Group << /Type /Group /S /Transparency /CS /DeviceRGB >> /PZ 1 >> endobj 24 0 obj <> stream 樳]}谽切5\娱sY,1 u&馠E榓綻鴂肓跚><兲p (t羑 Xn帕!9阅诈<]洀PG iGp)#Uv䌷埭%rp┭653疤璂 告5糥矉嫅6a$態緃憛e 悫1T2Q0W冯L⺈,_觚楦躇钺7纉蓬[枷x,柔鍮r#$8挠1洎/额Qp垠Ofq歂 耯i鬙vg #>巳葧舎 朔(!実DK肜:3∈PY詶芁,K杹=\]C|- 11}:j~$ ヶz轅e卉$胻佳 欰[|剣隘|S毤zc嶨~bc +榼}瑳 嘹W-獻:泭pcKG{懯e斝_橆榃筶缸J揲Gw担謭埿3+H]疯檒嗼趭◤éblf瓔. *;値帱"岂+ }&挮17n9緶捺繰/匄D隅2夏稶棉-痰咸Ic屬 23頖)璵>5.违 澥漙5鍌[尥卝篡W0&苷(涥^岸钤kk( 鳳zp6 垈c7僌踿堌显w0倿氄K^M6錗爘J}.呰hFY endstream endobj 25 0 obj << /Type /Page /Parent 1 0 R /LastModified (陼z伢\r貴栄迱暲8:) /Resources 2 0 R /MediaBox [0.000000 0.000000 595.276000 841.890000] /CropBox [0.000000 0.000000 595.276000 841.890000] /BleedBox [0.000000 0.000000 595.276000 841.890000] /TrimBox [0.000000 0.000000 595.276000 841.890000] /ArtBox [0.000000 0.000000 595.276000 841.890000] /Contents 26 0 R /Rotate 0 /Group << /Type /Group /S /Transparency /CS /DeviceRGB >> /PZ 1 >> endobj 26 0 obj <> stream 嬺堩婦V}街嶶Y 泏],葖軄 ,5.&bq_yYG C谭 `A9/HDN統誁眑t瞐關.紋L圦A訓B 阏.7U蕁褙7懨W镴暶籯啇e府8旎瞨 k鬥蜄F∕谂軞Fu#寽I侧 h沊俐庢餌︾軬穯{H╓扬鵯鸌=鴝哜秘虮e9[烧5gb 汶F.熪T2u&f沺o腄pX砀遙ぉA繍毗(m_羜SC7虘庵,L招譆=〾J7 O甪 :d~H酿谖']c#7$匪4c|4垪憖)|朱:B 芁京;轖W貈%蟡^蓣k )欿鍚-⑽Q)佉m9I賺+<鳪Lgta~}(622t纋騚fiw2芟棩Vp賌4XH`;V'紽滞詻,}駢$乍 Yw怱O 818B mr囑謓F璭鄔斻龊姃GB 晘@k僤糺o\瓫5额伮齽b# ?.@f縒* 刬k蚹炡喁8訣{颮$]<6B]濹孉佶 ,膱 h颠<瑳踅肪吷慮葢譴)菚曷籓畜欰J旅 烻Dr囲盁&瀈&pO蠩顪炩"$豯拀y(#ie叞恙沌a9熨塤癋8爐ec:菟J?C峯7柼]跂囎汰6#b蒛臿s搠貽緀 鑩%!錉q襗d袚崜C恈c碧昽顩扒\t1傟3n慓h潚跻6" endstream endobj 27 0 obj << /Type /Page /Parent 1 0 R /LastModified (爿勄镡瞽=0M蓆s槁屮у) /Resources 2 0 R /MediaBox [0.000000 0.000000 595.276000 841.890000] /CropBox [0.000000 0.000000 595.276000 841.890000] /BleedBox [0.000000 0.000000 595.276000 841.890000] /TrimBox [0.000000 0.000000 595.276000 841.890000] /ArtBox [0.000000 0.000000 595.276000 841.890000] /Contents 28 0 R /Rotate 0 /Group << /Type /Group /S /Transparency /CS /DeviceRGB >> /Annots [ 9 0 R 10 0 R ] /PZ 1 >> endobj 28 0 obj <> stream '躠dG甫4 N橥輓魟鼱 嗬x?vzRl7\胎Z}晠%;C浴%/檠矢宝L紸V新U鄺挭水T`JH?UyH+5gk鏒SA紜7遙乬 浹擼帕6*焲籓祖滐 翖j憱訍q#q喼gT胇鴶脿-珥杚牬過SLQDO愂7a>,滪S:.C樨+傿腩悻+3yw剈d)b!顏3 /-粩(坑璞~罽w辗^Z 瀠扯;1踬#Q稚 偖jn"垏!a臨z佛+癲 q纂e錳舘/巻暲櫽 餼繀O+顭iV覸TH礌v#'葻(60_涵;,岱:压B若@-MH Hh醲皾'嫈&庛鍫昛犮T顁抽嫾n-w5摝E勔{++Zr鶹\馥hP #瀦!欉埳垏y-鼏\}i铄1%顯8\!r$<筘l嬑'醅迍 P9沶⒄齰L Cw繬蘆<r𿣿U#h涼%?鸳otZ1( ü磙僟鴼=99軺'蔅鎤妹i洛r endstream endobj 1 0 obj << /Type /Pages /Kids [ 11 0 R 13 0 R 15 0 R 17 0 R 19 0 R 21 0 R 23 0 R 25 0 R 27 0 R ] /Count 9 >> endobj 3 0 obj <> endobj 4 0 obj <> endobj 29 0 obj <> /FontDescriptor 30 0 R /DW 1000 /W [ 1 [ 278 278 355 556 556 889 667 191 333 333 389 584 278 333 278 278 ] 17 26 556 27 28 278 29 31 584 32 [ 556 1015 667 667 722 722 ] 38 [ 667 611 778 722 278 500 667 556 833 722 778 667 778 722 667 611 722 667 944 667 667 ] 59 59 611 60 62 278 63 [ 469 500 333 556 556 500 556 556 278 556 556 222 222 500 222 833 ] 79 82 556 83 [ 333 500 278 556 500 722 ] 89 91 500 92 [ 334 260 334 584 ] 100 102 333 107 107 428 109 [ 222 222 333 333 ] 127 129 584 130 [ 422 561 561 713 823 561 561 549 561 600 549 418 584 800 800 506 506 ] 147 150 584 151 151 549 152 156 584 157 [ 549 561 561 740 740 667 222 372 1022 ] 171 [ 667 1073 823 816 ] 175 183 600 185 188 713 250 [ 278 555 832 933 667 ] ] >> endobj 30 0 obj <> endobj 5 0 obj <> endobj 31 0 obj <> /FontDescriptor 32 0 R /DW 1000 /W [ 1 [ 278 278 355 556 556 889 667 191 333 333 389 584 278 333 278 278 ] 17 26 556 27 28 278 29 31 584 32 [ 556 1015 667 667 722 722 ] 38 [ 667 611 778 722 278 500 667 556 833 722 778 667 778 722 667 611 722 667 944 667 667 ] 59 59 611 60 62 278 63 [ 469 500 333 556 556 500 556 556 278 556 556 222 222 500 222 833 ] 79 82 556 83 [ 333 500 278 556 500 722 ] 89 91 500 92 [ 334 260 334 584 ] 100 102 333 107 107 428 109 [ 222 222 333 333 ] 127 129 584 130 [ 422 561 561 713 823 561 561 549 561 600 549 418 584 800 800 506 506 ] 147 150 584 151 151 549 152 156 584 157 [ 549 561 561 740 740 667 222 372 1022 ] 171 [ 667 1073 823 816 ] 175 183 600 185 188 713 250 [ 278 555 832 933 667 ] ] >> endobj 32 0 obj <> endobj 7 0 obj << /Type /XObject /Subtype /Form /FormType 1 /Filter /FlateDecode /BBox [0.000000 0.000000 595.276000 85.039370] /Matrix [1 0 0 1 0 0] /Resources << /ProcSet [/PDF /Text /ImageB /ImageC /ImageI] /Font << /F3 5 0 R /F2 4 0 R >> >> /Length 204 >> stream 勐X&3間#2/祟-諯甧*VM^諘 $wX?搹储蘘殖婨堼|猴"i尸K朁I}NK井崗kb涴瓶泙盫埧'~跆穠B1菄驖o镬];襡[皈忺芉3C'所棲荸痋4k@K8涾?弁Bv3显U;:菔懟玅m頫]f咶Wy輦V=帊捸}禜恽骙A晚O驙 endstream endobj 2 0 obj << /ProcSet [/PDF /Text /ImageB /ImageC /ImageI] /Font << /F1 3 0 R /F2 4 0 R /F3 5 0 R >> /XObject << /XT7 7 0 R >> >> endobj 6 0 obj <> /H /I>> endobj 8 0 obj <QD爆4&\(T) /F 4 /Border [0 0 0] /A <> /H /I>> endobj 9 0 obj <> /H /I>> endobj 10 0 obj <> /H /I>> endobj 33 0 obj << /Filter /Standard /V 1 /Length 40 /R 2 /O (k坰de绁埡常A呉}鰏SJFm%i缡) /U (1;nI1佧軛򶎐6|/爬﹤雴僲慿) /P 2147421956 /EncryptMetadata true >> endobj 34 0 obj << /Title (J尋8盬臉账G|*畩>捀0觳矰5︿{Xx簰>掶竜坞ia鵩9"&6m) /Producer (J尋^苙5撵舅贽A|6畭凩!HNDe貚靤E\r馱\)48橶伴vl軃胛]笲袦 @鋌) /CreationDate (餓:乗\魺"俐GW\(枠碦) /ModDate (餓:乗\魺"俐GW\(枠碦) /Trapped /False >> endobj 35 0 obj << /Type /Metadata /Subtype /XML /Length 4311 >> stream application/pdf 2020-2025骞翠腑鍥藉鏂欑數绾跨數缂嗗競鍦鸿繍琛屾佸娍鍙婅涓氬彂灞曞墠鏅娴嬫姤鍛 2025-09-07T18:52:00+08:00 2025-09-07T18:52:00+08:00 2025-09-07T18:52:00+08:00 TCPDF 6.2.26 (http://www.tcpdf.org) uuid:a5971e06-67be-436a-6617-1a6ad808a42c uuid:a5971e06-67be-436a-6617-1a6ad808a42c http://ns.adobe.com/pdf/1.3/ pdf Adobe PDF Schema http://ns.adobe.com/xap/1.0/mm/ xmpMM XMP Media Management Schema internal UUID based identifier for specific incarnation of a document InstanceID URI http://www.aiim.org/pdfa/ns/id/ pdfaid PDF/A ID Schema internal Part of PDF/A standard part Integer internal Amendment of PDF/A standard amd Text internal Conformance level of PDF/A standard conformance Text endstream endobj 36 0 obj << /Type /Catalog /Version /1.7 /Pages 1 0 R /Names << >> /ViewerPreferences << /Direction /L2R >> /PageLayout /SinglePage /PageMode /UseNone /OpenAction [11 0 R /FitH null] /Metadata 35 0 R >> endobj xref 0 37 0000000000 65535 f 0000011764 00000 n 0000015000 00000 n 0000011880 00000 n 0000011986 00000 n 0000013241 00000 n 0000015135 00000 n 0000014518 00000 n 0000015349 00000 n 0000015602 00000 n 0000015855 00000 n 0000000015 00000 n 0000000485 00000 n 0000001029 00000 n 0000001500 00000 n 0000002720 00000 n 0000003172 00000 n 0000004263 00000 n 0000004715 00000 n 0000005618 00000 n 0000006070 00000 n 0000006934 00000 n 0000007386 00000 n 0000008238 00000 n 0000008691 00000 n 0000009366 00000 n 0000009819 00000 n 0000010669 00000 n 0000011146 00000 n 0000012127 00000 n 0000012989 00000 n 0000013387 00000 n 0000014254 00000 n 0000016076 00000 n 0000016249 00000 n 0000016535 00000 n 0000020929 00000 n trailer << /Size 37 /Root 36 0 R /Info 34 0 R /Encrypt 33 0 R /ID [ ] >> startxref 21139 %%EOF