2021骞存禉姹熺渷鍏嫏鍝¤€冭│琛屾脯閲嶉粸鐭ヨ瓨鍖附


2021骞存禉姹熺渷鍏嫏鍝¤€冭│琛屾脯閲嶉粸鐭ヨ瓨鍖附
瑷€瑾炵悊瑙�
1銆侀伕瑭炲~绌烘妧宸�
瑭炶獮鐨勯仼鐢ㄥ皪璞�/鎸囦唬鑼冨湇锛氬垎娓呰瑾炵殑涓昏獮鍜岃硴瑾�銆�
瑭炵京鐨勮紩閲嶇▼搴︼細
琛伴€€銆佽“?銆�?ldquo;閫€”鏄笡寮�锛�“鏁�”鏄牬鏁�銆傚悗鑰呴’鐒惰獮缇╄純閲�銆�
閬曞弽銆侀仌鐘細“鍙�”鎸囨柟鍚戠浉鑳�锛�“鐘�”鏄姷瑙搞€�“閬曠姱”姣�“閬曞弽”瑭炵京閲�銆�
瑭炵京鐨勫伌(c猫)閲嶉粸锛�
渚佃ゲ銆佷镜铦曪細瑗�锛岃ゲ鎿�;铦曪紝鎼嶈€�銆�“渚佃ゲ”鎸囦镜鍏ュ苟瑗叉搳鐨勮鐐猴紝鑰�“渚佃潟”鎸囦镜瀹冲苟浣夸箣鍙楁悕銆傚垎鍒ュ伌(c猫)閲嶉亷绋嬪拰绲�(ji茅)鏋�銆�
绶婄己銆佺穵淇忥細缂�锛岀己涔�;淇�锛屾寚璨ㄧ墿鐨勯姺璺ソ銆�“绶婄己”鎸囪波鐗┿€佽硣閲戞垨浜哄摗鍥犵煭缂鸿€岀穵寮�锛�“绶婁繌”鎸囧晢鍝佸洜閵疯矾濂借€屼緵涓嶆噳姹傘€備簩瑭炲悇鍋�(c猫)閲嶄笉鍚岀殑瑙掑害銆�
鑹插僵鎰忕京瀹氶ⅷ鏍硷細
瑜掔京瑭�(鎴愭灉)锛氳偗瀹�銆佸枩鎰� 鍙i牠瑾�(灏忔埃/鑰佸)锛氶€氫織 鑷劧
璨剁京瑭�(鍚庢灉)锛氬惁瀹氥€佸幁妫� 鏇搁潰瑾�(鍚濆棁/绐犺嚰)锛氭枃闆� 鑾婇噸
涓€ц(绲�(ji茅)鏋�)锛氫腑绔�銆佸瑙€
瑾為珨鐗瑰緛鍋氭帓闄わ細
鍏枃閫氬牨锛氭簴纰虹啊鏄�銆佹泛椤槗鎳�锛屾嫆绲曚慨杈寲琛ㄩ仈銆�
鏀胯珫鏅傝⿻锛氶倧杓毚瀵�銆佸畼鏂圭敤瑾�锛岄仼鐣跺舰璞″寲琛ㄩ仈銆�
鏂拌仦鍫遍亾锛氬瑙€绮剧厜銆侀€氫織鏅傛晥锛屼腑鎬ц閬嬬敤杓冨銆�
绉戞妧瑾槑锛氬琛�(sh霉)灏堟キ(y猫)銆佸瑙€鍒嗘瀽锛屼慨杈墜娉曚笉澶氳銆�
鏂囪棟浣滆⿻锛氳獮瑷€钘濊(sh霉)銆佽〃閬旈潏娲伙紝淇经鎵嬫硶杓冨父瑕�銆�
寤e憡瀹e偝锛氬毚璎�?sh霉)鐨縲銆侀啋鐩敓鍕曪紝淇经閬嬬敤杓冭瑳绌�銆�
2銆佺墖娈甸柋璁€鎶€宸�
绲�(ji茅)鍚堥伕闋呭仛鎺掗櫎
灏囬灏惧彞鐨勭閬歌寖鍦嶇敱鍥涘彞绺皬鍒板叐鍙�锛岄渶瑕佺祼(ji茅)鍚堥鍙ラ仼鐢ㄥ師鍓�
A. 鈶も憽鈶犫懃鈶⑩懀 B. 鈶b憽鈶犫懃鈶も憿
C. 鈶♀懃鈶犫懀鈶⑩懁 D. 鈶モ懁鈶♀憿鈶b憼
棣栧熬鍙ユ矑鏈夎(gu墨)寰嬶紝闇€瑕侀€愪竴鎺掓煡锛屽悓鏅傜祼(ji茅)鍚堝収(n猫i)閮ㄩ倧杓拰闂�(gu膩n)绯�
棣栧熬鍏�(n猫i)瀹规湁璎涚┒
棣栧彞涓嶅嚭鐝�(xi脿n)閫欎簺鍏�(n猫i)瀹癸細
鍙嶉潰璜栬瓑锛氬惁鍓�銆佷笉鐒�銆佸鏋滄矑鏈�锛屽鏋滀笉
瑁滃厖琛ㄨ堪锛氱暥鐒躲€佷篃銆佸張
鎸囩ず浠h锛氶€�銆侀€欎簺銆侀偅銆侀偅浜�銆佹
绲�(ji茅)璜栫附绲�(ji茅)锛氬洜姝ゃ€佹墍浠�銆佹渶绲�銆佺祩浜�
棣栧彞鍙互鍑虹従(xi脿n)閫欎簺鍏�(n猫i)瀹癸細
寮曠敤鐨勫垾浜虹殑瑙€榛� 鑳屾櫙鎬х殑闄宠堪 瑷晱鎻愬嚭瑭遍
灏惧彞涓€鑸嚭鐝�(xi脿n)閫欎簺鍏�(n猫i)瀹癸細
鍥犳銆佸洜鑰�銆佺附涔嬨€佸彲瑕�銆佺稖涓婃墍杩�
鏁�(sh霉)閲忛棞(gu膩n)绯�
1.浠e叆鎺掗櫎锛�
浠e叆鎺掗櫎鎬濈董鏄暩(sh霉)閲忛棞(gu膩n)绯荤涓€澶ф硶锛屽劒(y艒u)鍏堣€冩叜銆�
2.鐗瑰€兼€濈董锛�
灏嶄簬鏈変簺鍟忛锛岃嫢鑳芥牴鎿�(j霉)鍏跺叿楂旀儏娉�锛屽悎鐞嗗阀濡欏湴灏嶆煇浜涘厓绱犺肠鍊�锛岀壒鍒ユ槸璩︿簣纰哄畾鐨勭壒娈婂€�锛屽線寰€鑳戒娇鍟忛鐛插緱绨℃嵎鏈夋晥鐨勮В姹�銆傞骞蹭腑鏈夊垎鏁�(sh霉)锛屾瘮渚�锛屾垨鑰呭€嶆暩(sh霉)闂�(gu膩n)绯绘檪涓€鑸噰鐢ㄨ肠鍊兼硶绨″寲瑷堢畻锛岃肠鍊兼硶缍�(j墨ng)甯告噳鐢ㄥ湪濡傚伐绋嬪晱椤岋紝琛岀▼鍟忛锛岃不鐢ㄥ晱椤岀瓑椤岀洰涓�銆�
3.鍊嶆暩(sh霉)姣斾緥娉曪細
鑻 : b=m : n(m銆乶浜掕唱(zh矛))锛�
鍓囪鏄�: a鍗爉浠�锛屾槸m鐨勫€嶆暩(sh霉);
b鍗爊浠�锛屾槸n鐨勫€嶆暩(sh霉);
a+b鍗爉+n浠�锛屾槸m+n鐨勫€嶆暩(sh霉);
a-b鍗爉-n浠斤紝鏄痬-n鐨勫€嶆暩(sh霉)銆�
4.濂囧伓鐗规€ф硶锛�
鍏╁€嬪鏁�(sh霉)涔嬪拰/宸偤鍋舵暩(sh霉)锛屽叐鍊嬪伓鏁�(sh霉)涔嬪拰/宸偤鍋舵暩(sh霉)锛屼竴濂囦竴鍋朵箣鍜�/宸偤濂囨暩(sh霉);
鍏╁€嬫暩(sh霉)鐨勫拰宸偤濂囨暩(sh霉)锛屽墖瀹冨€戝鍋剁浉鍙�锛屽叐鍊嬫暩(sh霉)鐨勫拰/宸偤鍋舵暩(sh霉)锛屽墖瀹冨€戝鍋剁浉鍚�;
鍏╁€嬫暩(sh霉)鐨勫拰鐐哄鏁�(sh霉)锛屽墖鍏跺樊涔熺偤濂囨暩(sh霉)锛屽叐鍊嬫暩(sh霉)鐨勫拰鐐哄伓鏁�(sh霉)锛屽墖鍏跺樊涔熺偤鍋舵暩(sh霉)
5.鏂圭▼娉曪細
寰堝鏁�(sh霉)瀛搁亱绠楅鐩兘鍙互閲囩敤鍒楁柟绋嬮€茶姹傝В銆�
鏂圭▼娉曟敞鎰忎簨闋咃細鏈煡鏁�(sh霉)瑕佷究浜庡垪鏂圭▼;鏈煡鏁�(sh霉)鍙互鐢ㄥ瓧姣嶈〃绀�锛屼篃鍙互鐢�“浠芥暩(sh霉)”锛岄倓鍙互鐢ㄦ饥瀛楅€茶鏇夸唬銆�
浜斿ぇ妯″瀷
妯″瀷涓€锛氱墰鍚冭崏妯″瀷
姝ゆā鍨嬫槸鎸囧瓨鍦ㄤ竴鍊嬪畾閲�锛屽悓鏅傛棦鏈変娇鍏跺鍔犵殑閲忥紝涔熸湁浣垮叾娓涘皯鐨勯噺锛岀啊鍠鎷氨鏄湁閫叉湁鍑恒€傞€欑ó椤屽瀷甯歌鐨勫氨鏄互鎺掓瘮鍙ョ殑褰㈠紡鍑虹従(xi脿n)锛屽苟涓旀瘡涓€鍙ヨ┍涓兘鏈冨嚭鐝�(xi脿n)鍏╁€嬫暩(sh霉)锛屼竴鍊嬭〃绀烘暩(sh霉)閲�锛屼竴鍊嬭〃绀烘檪闁�銆�
绀轰緥锛氱墽鍫翠笂鏈変竴鐗囬潚鑽�锛屾瘡澶╅兘鐢熼暦寰椾竴妯e揩銆傞€欑墖闈掕崏渚涚郸N1闋墰鍚冿紝鍙互鍚僼1澶�锛屾垨鑰呬緵绲2闋墰鍚冿紝鍙互鍚僼2澶�锛屽鏋滀緵绲3闋墰鍚�锛屽彲浠ュ悆骞惧ぉ?
灏嶄簬閫欑ó椤屽瀷鏍稿績鍏紡锛氬師鏈夎崏閲�=(N1-X)×t1 =(N2-X)×t2=(N3-X)×t3
鎵€浠ュ彧闇€瑕佹牴鎿�(j霉)椤屽共鐨勮(gu墨)寰嬶紝鐢ㄨ〃绀烘暩(sh霉)閲忕殑鏁�(sh霉)瀛�-x鐨勭祼(ji茅)鏋滀箻浠ュ皪鎳夌殑鏅傞枔鍒楀嚭鏂圭▼鍗冲彲銆�
渚嬮 鐗у牬涓婃湁涓€鐗囬潚鑽�锛屾瘡澶╅兘鐢熼暦寰椾竴妯e揩銆傞€欑墖闈掕崏渚涚郸10闋墰鍚�锛屽彲浠ュ悆22澶�锛屾垨鑰呬緵绲�16闋墰鍚冿紝鍙互鍚�10澶�锛屽鏋滀緵绲�27闋墰鍚�锛屽彲浠ュ悆骞惧ぉ?
A銆�5 B銆�6 C銆�7 D銆�8
绛旀锛欰 鍒嗘瀽锛�(10-x)×22=(16-x)×10=(27-x)×t3
瑙d箣寰� X=5,t3=5澶�
甯歌褰㈠紡锛氱墰鍚冭崏銆佹帓闅婃敹閵€/妾㈢エ銆佹娊姘存斁姘�銆侀枊閲囪硣婧愩€佺埇鑷嫊鎵舵绛�銆�
妯″瀷浜岋細鐩寸窔澶氭鐩搁亣鍟忛
寰炲叐鍦板悓鏅傚嚭鐧�(f膩)鐨勭洿绶氱浉閬囧晱椤屼腑锛岀n娆$浉閬囨檪锛岃矾绋嬪拰绛変簬绗竴娆$浉閬囨檪璺▼鍜岀殑2n-1鍊�锛屾瘡鍊嬩汉璧扮殑璺▼绛変簬浠栫涓€娆$浉閬囨檪鎵€璧拌矾绋嬬殑2n-1鍊�銆�
妯″瀷涓夛細閷綅閲嶆帓鍟忛
姣忎竴灏嶅厓绱犻兘鏈変竴鍊嬩竴涓€灏嶆噳闂�(gu膩n)绯�锛屽晱鎵撶牬姣忎竴灏嶄竴涓€灏嶆噳闂�(gu膩n)绯荤殑鏂规硶鏁�(sh霉)锛屾绋柟娉曞彨鍋氶尟浣嶉噸鎺掋€�
妯″瀷鍥涳細鐠�(hu谩n)褰㈡帓鍒�
妯″瀷浜旓細澶氭鐛ㄧ珛閲嶅京瑭﹂
鍒ゆ柗鎺ㄧ悊
鍦栧舰鎺ㄧ悊瑕�(gu墨)寰�
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3.鍏冪礌鐩镐技銆傞骞插悇鍦栧舰鍏冪礌鍛堢従(xi脿n)鐩镐技鐨勭壒寰�锛屽湪鍏冪礌鍊嬫暩(sh霉)涓婂彲鑳藉瓨鍦ㄥ樊鐣帮紝鍓囧彲浠ヨ€冩叜鍦栧舰鐨勬ǎ寮忛亶姝�(缂轰粈涔堣浠€涔�)銆佺祫鍚堢枈鍔�(鐩存帴鐤婂姞銆佸姞娓涘悓鐣�銆侀粦鐧界枈鍔�)銆�
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鍒ゆ柗鎺ㄧ悊瑕�(gu墨)寰�
缈昏鎺ㄧ悊
涓夊€嬪熀鏈畾鐞�
閫嗗惁瀹氱悊锛欰鎺ㄥ嚭B→鍚鎺ㄥ嚭鍚
鑲墠鑲悗锛屽惁鍚庡惁鍓�
鎽╂牴瀹氬緥1锛氬惁(A鎴朆)→鍚涓斿惁B
鎽╂牴瀹氬緥2锛氬惁(A涓擝)→鍚鎴栧惁B
涓冩鍩烘湰缈昏
鎵€鏈�(鍑℃槸)S閮芥槸P锛孲鎺ㄥ嚭P
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娌掓湁S鏄疨锛宲鎺ㄥ嚭闈濻
涓嶆槸S閮戒笉鏄疨锛孭鎺ㄥ嚭S
鍏呭垎姊濅欢锛歅鎺ㄥ嚭Q銆傚鏋淧锛岄偅涔圦;鍙P锛屽氨Q;鍑℃槸P锛岄兘Q
蹇呰姊濅欢锛歈鎺ㄥ嚭P銆傚彧鏈塒锛屾墠Q;闄ら潪P锛屽惁鍓囦笉Q;P鏄疩蹇呬笉鍙皯鐨勬浠躲€�
鎺掍腑寰嬶細闈濸鍗砆锛岄潪Q鍗砅?锛涜洏閫�锛屾垨鑰匭;瑕佷箞P锛岃涔圦
涓夌ó鍩烘湰闂�(gu膩n)绯�
鐭涚浘闂�(gu膩n)绯�
鐭涚浘鏄寚鍏╁懡椤岄潪姝ゅ嵆褰肩殑闂�(gu膩n)绯伙紝鍏╁懡椤岀殑鐪熷亣鎯呮硜蹇呭畾鐐�“涓€鐪熶竴鍋�”銆�
鍙嶅皪闂�(gu膩n)绯�
涓婂弽灏嶉棞(gu膩n)绯伙細鍏ㄧū鑲畾鍛介鑸囧叏绋嬪惁瀹氬懡椤�?锛熻祻顑�?锛屼笉鍙悓鐪�銆�
涓嬪弽灏嶉棞(gu膩n)绯�锛岀壒绋辫偗瀹氬懡椤岃垏鐗圭ū鍚﹀畾鍛介?锛熻祻顑板Λ顑嶈雹璧忣儣?銆�
鍖呭闂�(gu膩n)绯�
鍖呭鏄寚锛岃嫢A鐪�锛屽墖B涔熺湡锛屽嵆鏈夛細A→B銆傚叐鍊嬪懡椤�锛岃嫢鍛介涓彧鏈変竴鐪�锛屽墖A蹇呯偤鍋�;鑻ュ懡椤屼腑鍙湁涓€鍋囷紝鍓嘊蹇呯偤鐪�銆�“涓€鐪熷墠鍋�锛屼竴鍋囧悗鐪�”
閭忚集璜栬瓑
1. 鍔犲挤璜栬瓑
(1)闈炲洜鏋滈锛�
鈶犲寮疯珫榛�(閫氶亷瑙i噵銆侀噸鐢宠珫榛為€茶鍔犲挤)
鈶″寮疯珫鎿�(j霉)锛氬垎鐐哄叐绋紝涓€绋槸瑁滃厖涓€鍊嬫闈㈣珫鎿�(j霉)锛屽彟涓€绋槸瑙i噵鍘熸湁鐨勮珫鎿�(j霉)锛屼簩鑰呭潎鍙捣鍒板姞寮蜂綔鐢�
鈶㈠緸璜栬瓑鏂瑰紡鍏ユ墜锛氭惌姗�(灏囪珫榛炶垏璜栨摎(j霉)鑱�(li谩n)绯昏捣渚�锛屽線寰€鏃㈠寘鍚珫鎿�(j霉)鐨勯棞(gu膩n)閸佃鍙堝寘鍚珫榛炵殑闂�(gu膩n)閸佃銆�)鍜岃鍏呭墠鎻�(閫欐槸璜栭粸寰椾互鎴愮珛鐨勫繀瑕佹浠�/鍩虹锛屽彲浠ョ敤鍚﹀畾浠e叆娉曢€茶椹楄瓑)銆�
(2)鍥犳灉椤烇細鈶犳帓闄や粬鍥�—鎺掗櫎鍏朵粬灏庤嚧绲�(ji茅)鏋滃嚭鐝�(xi脿n)鐨勫師鍥�;鈶″皪姣斿椹�—鏈堿鏈塀锛屾矑A娌払銆�
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2. 鍓婂急璜栬瓑
(1)闈炲洜鏋滈锛氣憼鍓婂急璜栭粸;鈶″墛寮辫珫鎿�(j霉);鈶㈠墛寮辫珫璀夋柟寮�(鎷嗘⿱);鈶e惁瀹氬墠鎻愩€�
(2)鍥犳灉椤烇細鈶犲彟鏈変粬鍥�—閭勬湁鍏朵粬鍘熷洜?q奴)械闄哬(ji茅)鏋滅殑鍑虹従(xi脿n);鈶″皪姣斿椹�—鏈堿鐒锛岀劇A鏈塀;鈶㈠洜鏋滃€掔疆銆�
鑰冪敓閫氶亷涓婅堪鐨勮娓附绲�(ji茅)锛屽彲浠ュ皣浠ュ線鐨勭煡璀橀粸閫茶绺界祼(ji茅)鍜屾⒊鐞�锛岀湅鍝竴鍊嬬挵(hu谩n)绡€(ji茅)閭勬矑鏈夊緢濂界殑鎺屾彙锛屽彲浠ラ€茶鏌ユ紡瑁滅己銆傛洿澶氶棞(gu膩n)浜庣殑鑰冭│淇℃伅鑰冪敓閫氶亷 鍏嶈不闋愮磩鐭俊鎻愰啋鏈嶅嫏锛岀挵(hu谩n)鐞冪恫(w菐ng)鏍℃渻绲﹁€冪敓浠ョ煭淇$殑褰㈠紡鐧�(f膩)閫佽€冭│鐨勬檪闁撳拰娉ㄦ剰浜嬮爡锛屾洿澶氭妧宸ф€х殑鍌欒€冭硣鏂�锛岃€冪敓鍙互榛炴搳涓嬫柟閺堟帴鍏嶈不闋樺彇渚嗙獊鎿婅嚜宸辩殑鍒嗘暩(sh霉)銆�
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