2021骞翠笂娴峰叕鍕�(w霉)鍝¤€冭│琛屾脯(c猫)鏁�(sh霉)閲忛棞(gu膩n)绯荤反缈�(x铆)椤岋紙50锛�

1.鏌愭梾琛屽湗(tu谩n)鍏�32浜哄湪鏅崁(q奴)璩艰卜绱€(j矛)蹇靛搧锛屾瘡浜烘渶澶氳卜3浠�銆傚凡鐭ヨ臣璨�1浠剁磤(j矛)蹇靛搧鐨勪汉鏁�(sh霉)鏄臣璨峰浠剁磤(j矛)蹇靛搧鐨�2鍊嶃€傚悗缍�(j墨ng)绲�(t菕ng)瑷�(j矛)锛屾梾琛屽湗(tu谩n)鎵€鏈変汉鍏辫臣璨蜂簡48浠剁磤(j矛)蹇靛搧銆傚墖鏃呰鍦�(tu谩n)涓湁澶氬皯浜烘矑鏈夎臣璨风磤(j矛)蹇靛搧( )

A.2

B.3

C.5

D.7

2.鏌愬叕鍙稿勾绲傛櫄鏈�(hu矛)鏈変竴绡€(ji茅)鐩細A銆丅銆丆涓夌ó鐩掑瓙鍚勬湁鑻ュ共锛岀洅瀛愯鏈夊悇绋皬鐛�(ji菐ng)鍝�銆傛瘡浜烘渶澶氭嬁3鍊�(g猫)锛屼篃鍙互涓嶆嬁銆�321鍚嶅摗宸ュ叏閮ㄩ伕鎿囧悗锛屼富鎸佷汉灏囨墍鎷跨洅瀛愭暩(sh霉)閲忚垏绋瀹屽叏鐩稿悓鐨勫摗宸ュ垎鐐轰竴绲勩€傚墖浜烘暩(sh霉)鏈€澶氱殑涓€绲勮嚦灏戞湁澶氬皯鍚嶅摗宸�( )

A.16

B.17

C.28

D.29

3.鏌愪箳涔撶悆閭€璜�(q菒ng)璩芥湁110鍚嶇悆鍝″弮鍔�銆備富杈︽柟瑕�(gu墨)瀹氭瘮璩藉緸鏌愬€�(g猫)鍛ㄤ竴闁嬪锛岀悆鍝℃娊绨藉叐鍏╃埈濂笅涓€杓殑鍑虹窔娆�(qu谩n)锛屾矑鏈夋娊鍒板皪(du矛)鎵嬬殑鐞冨摗杓┖锛岀洿鎺ラ€�(j矛n)鍏ヤ笅涓€杓€傝嫢姣忓悕鐞冨摗姣忓ぉ鏈€澶氬彧鍙冨姞涓€鍫存瘮璩�锛屽墖鏈夎吉绌虹殑姣旇辰鏃ユ槸( )

A.鍛ㄤ簩鍜屽懆鍥�

B.鍛ㄤ笁鍜屽懆浜�

C.鍛ㄤ簩鍜屽懆浜�

D.鍛ㄥ洓鍜屽懆浜�

4.鐢�銆佷箼銆佷笝3鍊�(g猫)鏀跺壊闅�(du矛)鍚勬湁鑻ュ共鑷�(t谩i)鏀跺壊姗�(j墨)锛屾瘡鑷�(t谩i)鏀跺壊姗�(j墨)鏁堢巼鐩稿悓锛岀敳闅�(du矛)鐨勫伐鏁堣垏涔�銆佷笝鍏╅殜(du矛)鍚堜綔鐨勫伐鏁堢浉鍚岋紝涓欓殜(du矛)宸ユ晥涓嶅皬浜庝箼闅�(du矛)?锛孎(xi脿n)鏈変竴鐗囬亥鍦�锛屼笁闅�(du矛)鍚堜綔5澶╂濂藉彲瀹屾垚锛岃嫢鐢查殜(du矛)澧炲姞5鑷�(t谩i)鏀跺壊姗�(j墨)鍚�锛屼笁闅�(du矛)鍚堜綔4澶╂濂藉彲瀹屾垚锛屽墖涓欓殜(du矛)鑷冲皯鏈夊灏戣嚭(t谩i)鏀跺壊姗�(j墨)( )

A.4

B.5

C.6

D.10

5.鎶�13妫靛悓妯ｇ殑鏉炬ü鍜�7妫靛悓妯ｇ殑鏌忔ü绋鍦ㄩ亾璺叐鍋�(c猫)锛屾瘡鍋�(c猫)绋10妫�锛岃姹傛瘡鍋�(c猫)鏌忔ü涓嶇浉閯般€傚湪婊胯冻鍏朵腑涓€鍋�(c猫)绋鏉炬ü鑸囨煆妯规暩(sh霉)閲忕浉宸渶澶氱殑鎯呮硜涓嬶紝鏈夊灏戠ó涓嶅悓鐨勭ó妞嶆柟娉�( )

A.72

B.144

C.216

D.432

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1.绛旀锛欰

銆愯В鏋愩€戯細瑷�(sh猫)鏈墄浜鸿臣璨�3浠剁磤(j矛)蹇靛搧锛屾湁y浜鸿臣璨�2浠剁磤(j矛)蹇靛搧锛屽墖鏈�(2x+2y)浜鸿臣璨�1浠剁磤(j矛)蹇靛搧銆傚墖鏍规摎(j霉)椤屾剰鍙緱3x+2y+(2x+2y)=5x+4y=48锛�5x鐨勫熬鏁�(sh霉)鐐�0鎴�5锛屽墖4y鐨勫熬鏁�(sh霉)鐐�8鎴�3锛屽張鍥�4y鏄伓鏁�(sh霉)锛屽洜姝鐨勫熬鏁�(sh霉)蹇呯劧鐐�2鎴�7锛岀敱x≥0锛屽洜姝�4y≤48锛屽嵆y≤12锛屽墖y鍙兘鐨勫€兼湁2銆�7銆�12銆�

鑻=12锛屽墖x=0锛屾鏅�(sh铆)璩艰卜绱€(j矛)蹇靛搧鐨勬父瀹汉鏁�(sh霉)鐐簒+y+(2x+2y)=3x+3y=36>32锛屼笉婊胯冻姊濅欢銆傝嫢y=7锛屽墖x=4锛屾鏅�(sh铆)璩艰卜绱€(j矛)蹇靛搧鐨勬父瀹汉鏁�(sh霉)鐐�3x+3y=33>32锛屼笉婊胯冻姊濅欢銆傚洜姝=2锛寈=8锛屾鏅�(sh铆)璩艰卜绱€(j矛)蹇靛搧鐨勬父瀹汉鏁�(sh霉)鐐�3x+3y=30锛屽墖鏈�32-30=2(浜�)娌掓湁璩艰卜绱€(j矛)蹇靛搧銆傚洜姝闋�(xi脿ng)鐣�(d膩ng)閬�銆�

2.绛旀锛欱

銆愯В鏋愩€戯細鏍规摎(j霉)椤屾剰鍙煡锛屾瘡浜烘渶澶氭嬁3鍊�(g猫)锛屼篃鍙互涓嶆嬁銆傝嫢涓嶆嬁锛屽墖鏈�1绋�;鑻ユ嬁1鍊�(g猫)锛屽墖鏈�=3(绋�);鑻ユ嬁2鍊�(g猫)锛屽墖鏈�+=6(绋�);鑻ユ嬁3鍊�(g猫)锛屽墖鏈�+×+=10(绋�)銆傚洜姝や竴鍏辨湁1+3+6+10=20(绋�)锛屽洜姝ゆ渶澶氬彲鍒嗙偤20绲勶紝321/20=16……1锛屽嵆浜烘暩(sh霉)鏈€澶氱殑涓€绲勮嚦灏戞湁16+1=17(鍚�)鍝″伐銆傚洜姝闋�(xi脿ng)鐣�(d膩ng)閬�銆�

3.绛旀锛欳

銆愯В鏋愩€戯細鐢变簬姣忓悕鐞冨摗姣忓ぉ鏈€澶氬彧鍙冨姞涓€鍫存瘮璩�锛屽墖鍛ㄤ竴110鍚嶇悆鍝＄劇杓┖;鍛ㄤ簩55鍚嶇悆鍝℃湁杓┖;鍛ㄤ笁28鍚嶇悆鍝＄劇杓┖;鍛ㄥ洓14鍚嶇悆鍝＄劇杓┖;鍛ㄤ簲7鍚嶇悆鍝℃湁杓┖;鍛ㄥ叚4鍚嶇悆鍝＄劇杓┖;鍛ㄦ棩鏄啝杌嶇埈濂紝鐒¤吉绌�銆備竴鍏辨瘮璩�7澶╋紝鍛ㄤ簩銆佸懆浜斿叐鍊�(g猫)姣旇辰鏃ユ湁杓┖銆傚洜姝闋�(xi脿ng)鐣�(d膩ng)閬�銆�

4.绛旀锛欱

銆愯В鏋愩€戯細鏍规摎(j霉)椤屾剰鍙煡锛岀敳闅�(du矛)澧炲姞鏀跺壊姗�(j墨)鍓嶅悗锛屼笁闅�(du矛)鍚堜綔瀹屾垚鐨勬檪(sh铆)闁撳垎鍒ョ偤5澶�銆�4澶�锛屾檪(sh铆)闁撲箣姣旂偤5:4锛屽伐绋嬬附閲忕浉鍚�锛屾檪(sh铆)闁撹垏鏁堢巼鎴愬弽姣旓紝鍓囧鍔犳敹鍓叉(j墨)鍓嶅悗涓夐殜(du矛)鍚堜綔鐨勬晥鐜囦箣姣旂偤4:5锛屽亣瑷�(sh猫)澧炲姞鏀跺壊姗�(j墨)涔嬪墠涓夐殜(du矛)鍏辨湁鏀跺壊姗�(j墨)4x鑷�(t谩i)锛屽墖4x+5=5x锛岃В寰梮=5锛屽墖涓夊€�(g猫)鏀跺壊闅�(du矛)鍘熸湁鏀跺壊姗�(j墨)4x=4×5=20(鑷�(t谩i))銆傚張鐢查殜(du矛)鐨勫伐鏁堣垏涔欍€佷笝鍏╅殜(du矛)鍚堜綔鐨勫伐鏁堢浉鍚�锛屽墖涔�銆佷笝鍏╅殜(du矛)鏀跺壊姗�(j墨)鑷�(t谩i)鏁�(sh霉)鐐虹附鑷�(t谩i)鏁�(sh霉)鐨勪竴鍗�锛屽嵆10鑷�(t谩i)锛屽凡鐭ヤ笝闅�(du矛)宸ユ晥涓嶅皬浜庝箼闅�(du矛)锛屽墖涓欓殜(du矛)鏀跺壊姗�(j墨)鑷�(t谩i)鏁�(sh霉)涓嶅皯浜庝箼闅�(du矛)锛岃嚦灏戞湁5鑷�(t谩i)銆傚洜姝闋�(xi脿ng)鐣�(d膩ng)閬�銆�

5.绛旀锛欴

銆愯В鏋愩€戯細鏍规摎(j霉)椤屾剰鍙煡锛岃鎯冲叾涓煇鍋�(c猫)绋鏉炬ü鑸囨煆妯规暩(sh霉)閲忕浉宸洝鍙兘澶�锛屽墖鍙︿竴鍋�(c猫)绋鏉炬ü鏁�(sh霉)閲忔噳(y墨ng)鐩″彲鑳藉皯銆傚凡鐭ユ瘡鍋�(c猫)绋10妫垫ü锛屼笖鏌忔ü涓嶇浉閯�锛屽墖鍏朵腑涓€鍋�(c猫)绋5妫垫澗妯�锛�5妫垫煆妯�(鑻ョó妞�4妫垫澗妯�锛�6妫垫煆妯癸紝鍓囨渻(hu矛)鍑虹従(xi脿n)鏌忔ü鐩搁劙鐨勬儏褰�)锛屾鏅�(sh铆)婊胯冻鍙︿竴鍋�(c猫)绋鏉炬ü鑸囨煆妯规暩(sh霉)閲忕浉宸渶澶�銆�

鍒嗘儏娉佽◣璜栵細

鑻ュ乏鍋�(c猫)绋5妫垫澗妯�銆�5妫垫煆妯�锛屾煆妯瑰悇涓嶇浉閯�锛屾儏娉佹暩(sh霉)鐐�;鍓囧彸鍋�(c猫)绋8妫垫澗妯�銆�2妫垫煆妯癸紝鏌忔ü鍚勪笉鐩搁劙锛屾儏娉佹暩(sh霉)鐐�36锛屾柟娉曟暩(sh霉)鐐�6×36=216銆�

鑻ュ彸鍋�(c猫)绋5妫垫澗妯�銆�5妫垫煆妯癸紝鏂规硶鏁�(sh霉)鑸囧乏鍋�(c猫)绋5妫垫澗妯�銆�5妫垫煆妯圭浉绛夈€�

鍓囩附鏂规硶鏁�(sh霉)鐐�216×2=432銆侱闋�(xi脿ng)鐣�(d膩ng)閬�銆�

绶ㄨ集鎺ㄨ枽锛�2021骞翠笂娴峰叕鍕�(w霉)鍝¤€冭│閲嶈鏅�(sh铆)闁撳尟绺�

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