2020浜嬫キ(y猫)鍠綅鑱锋脯(c猫)鑰冭│涓嶅畾鏂圭▼瑙i灏忔妧宸�


2020浜嬫キ(y猫)鍠綅鑱锋脯(c猫)鑰冭│涓嶅畾鏂圭▼瑙i灏忔妧宸�
涓€銆佸熬鏁�(sh霉)娉�
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鏈�271浣嶆父瀹㈡涔樺ぇ銆佸皬鍏╃ó瀹㈣粖鏃呮父锛屽凡鐭ュぇ瀹㈣粖鏈�37鍊�(g猫)搴т綅锛屽皬瀹㈣粖鏈�20鍊�(g猫)搴т綅銆傜偤淇濊瓑姣忎綅娓稿鍧囨湁搴т綅锛屼笖杌婁笂娌掓湁绌哄骇浣�锛屽墖闇€瑕佸ぇ瀹㈣粖鐨勮紱鏁�(sh霉)鏄細
A.1杓� B.3杓� C.2杓� D.4杓�
銆愮瓟妗堛€態
鍙冭€冭В鏋愶細灏炬暩(sh霉)娉�锛岃ō(sh猫)澶у杌婇渶瑕亁杓�锛屽皬瀹㈣粖闇€瑕亂杓涳紝鍓�37x+20y=271锛�20y鐨勫熬鏁�(sh霉)涓€瀹氭槸0锛屽墖37x鐨勫熬鏁�(sh霉)绛変簬271鐨勫熬鏁�(sh霉)1锛岀敱浜�3×7=(21)锛寈鐨勫熬鏁�(sh霉)灏辨槸3锛岀祼(ji茅)鍚堥伕闋�(xi脿ng)锛屾纰虹瓟妗堝氨鏄疊銆�
浜屻€佸鍋舵€�
鐣�(d膩ng)鏈煡鏁�(sh霉)鐨勭郴鏁�(sh霉)鏈夊伓鏁�(sh霉)鏅�(sh铆)浣跨敤
鏌愬厭绔ヨ棟琛�(sh霉)鍩硅〒(x霉n)涓績鏈�5鍚嶉嫾鐞存暀甯拰6鍚嶆媺涓佽垶鏁欏斧锛屽煿瑷�(x霉n)涓績灏囨墍鏈夌殑閶肩惔瀛�(xu茅)鍝″拰鎷変竵鑸炲(xu茅)鍝″叡76浜哄垎鍒ュ钩鍧囧湴鍒嗙郸鍚勫€�(g猫)鑰佸斧甯堕牁(l菒ng)锛屽墰濂借兘澶犲垎瀹�锛屼笖姣忎綅鑰佸斧鎵€甯剁殑瀛�(xu茅)鐢熸暩(sh霉)閲忛兘鏄唱(zh矛)鏁�(sh霉)銆傚悗渚嗙敱浜庡(xu茅)鐢熶汉鏁�(sh霉)娓涘皯锛屽煿瑷�(x霉n)涓績鍙繚鐣欎簡4鍚嶉嫾鐞存暀甯拰3鍚嶆媺涓佽垶鏁欏斧锛屼絾姣忓悕鏁欏斧鎵€甯剁殑瀛�(xu茅)鐢熸暩(sh霉)閲忎笉璁�锛岄偅涔堢洰鍓嶅煿瑷�(x霉n)涓績閭勫墿涓嬪(xu茅)鍝″灏戜汉?
A.36 B.37 C.39 D.41
銆愮瓟妗堛€慏
鍙冭€冭В鏋愶細姝ら鍒濈湅鐒¤檿鍏ユ墜锛屾浠跺儏鍍呮湁姣忎綅鏁欏斧鎵€甯跺(xu茅)鐢熸暩(sh霉)閲忕偤璩�(zh矛)鏁�(sh霉)锛屾浠惰純灏�锛岀劇娉曠洿鎺ュ埄鐢ㄦ暩(sh霉)閲忛棞(gu膩n)绯讳締鎺ㄦ柗锛岄渶鍒╃敤鏂圭▼娉�銆�
瑷�(sh猫)姣忎綅閶肩惔鏁欏斧甯秞鍚嶅(xu茅)鐢�锛屾瘡浣嶆媺涓佽垶鏁欏斧甯秠鍚嶅(xu茅)鐢�锛屽墖x銆亂鐐鸿唱(zh矛)鏁�(sh霉)锛屼笖5x+6y=76銆傚皪(du矛)浜庨€欏€�(g猫)涓嶅畾鏂圭▼锛岄渶瑕佸緸鏁撮櫎鐗规€�銆佸鍋舵€ф垨璩�(zh矛)鍚堟€т締瑙i銆�
寰堟槑椤�锛�6y鏄伓鏁�(sh霉)锛�76鏄伓鏁�(sh霉)锛屽墖5x鐐哄伓鏁�(sh霉)锛寈鐐哄伓鏁�(sh霉)銆傜劧鑰寈鍙堢偤璩�(zh矛)鏁�(sh霉)锛屾牴鎿�(j霉)“2鏄敮涓€鐨勫伓璩�(zh矛)鏁�(sh霉)”鍙煡锛寈=2锛屼唬鍏ュ師寮忓緱y=11銆傜従(xi脿n)鏈�4鍚嶉嫾鐞存暀甯拰3鍚嶆媺涓佽垶鏁欏斧锛屽墖鍓╀笅瀛�(xu茅)鍝�4×2+3×11=41浜恒€傚洜姝ら伕鎿嘍銆�
涓�銆佹暣闄ゆ硶
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灏忔潕鐢�150鍏冮將璩艰卜浜�16鍏冧竴鍊�(g猫)鐨勬浉鍖�銆�10鍏冧竴鍊�(g猫)鐨勮▓(j矛)绠楀櫒鍜�7鍏冧竴鏀殑閶肩瓎瀵勭郸鐏�(z膩i)鍗€(q奴)鍏掔锛屽鏋滀粬璨风殑姣忎竴妯g墿鍝佹暩(sh霉)閲忛兘涓嶇浉鍚�锛屼笖鏇稿寘鏁�(sh霉)閲忔渶澶氳€岄嫾绛嗘暩(sh霉)閲忔渶灏戯紝閭d箞浠栬卜鐨勮▓(j矛)绠楀櫒鏁�(sh霉)閲忔瘮閶肩瓎澶氬灏戝€�(g猫)?
A.1 B.2 C.3 D.4
銆愮瓟妗堛€態
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