2020骞存渤鍗楀叕鍕�(w霉)鍝¤€冭│琛屾脯鏁�(sh霉)閲忛棞(gu膩n)绯荤反缈�(x铆)椤岋紙7鏈�22鏃ワ級
鐎忚
鏀惰棌
2020骞存渤鍗楀叕鍕�(w霉)鍝¤€冭│琛屾脯鏁�(sh霉)閲忛棞(gu膩n)绯荤反缈�(x铆)椤岋紙7鏈�22鏃ワ級
1.鏌愬柈浣嶈臣璨稟鍜孊鍏╃ó鑰楁潗锛屽柈鍍�(ji脿)鍒嗗垾鐐�50鍏�/浠跺拰70鍏�/浠�锛屽叡鑺辫不(f猫i)710鍏冿紝涓旀墍璩艰€楁潗涓瑼鐨勪欢鏁�(sh霉)鍗犳瘮涓嶅埌涓€鍗�銆傚晱瑭插柈浣嶅叡璩艰卜A銆丅鑰楁潗澶氬皯浠�?
A.11
B.12
C.13
D.14
2.浼佹キ(y猫)娓呭€夎檿鐞嗘煇绋晢鍝�锛屾瘡浠跺晢鍝佸湪鍘熷児(ji脿)鐨勫熀绀�(ch菙)涓婃墦鍏姌鍚庡啀娓�200鍏�锛屽钩鍧囨瘡浠跺晢鍝佽櫑鎼�440鍏冦€傚凡鐭ヨ┎鍟嗗搧鐨勫師鍍�(ji脿)姣旀垚鏈珮20%锛屽晱鍦ㄦ竻鍊夎檿鐞嗘湡闁�锛�10钀厓鏈€澶氳兘璩艰卜澶氬皯浠堕€欑ó鍟嗗搧?
A.16
B.17
C.18
D.19
3.鏌愬柈浣嶆淳鐢�銆佷箼鍏╁悕閬告墜绲勯殜(du矛)鍙冨姞涔掍箵鐞冩瘮璩�锛屽叾涓敳姣忓牬姣旇辰鍧囨湁40%鐨勫彲鑳芥€х嵅鍕濓紝涔欐瘡鍫存瘮璩藉潎鏈�70%鐨勫彲鑳芥€х嵅鍕�?锛孎(xi脿n)瀹夋帓鐢插弮鍔�1鍫存瘮璩斤紝涔欏弮鍔�2鍫存瘮璩�锛岀附瑷�(j矛)鐛插嫕2鍫村強浠ヤ笂鍗冲彲鍑虹窔銆傚晱瑭插柈浣嶄唬琛ㄩ殜(du矛)鍑虹窔鐨勬鐜囩偤锛�
A.48.8%
B.56.4%
C.61.4%
D.65.8%
4.鏌愬湴49鍚嶆壎璨у共閮ㄤ竴鍛ㄥ叡璧拌í530鎴惰钵鍥拌静(n贸ng)鎴�锛屾瘡浜鸿嚦灏戣蛋瑷�3鎴�銆傚凡鐭ヤ笉鍙兘寰為€�49浜轰腑鎵惧嚭4鍚嶇暥(d膩ng)鍛ㄨ蛋瑷钵鍥拌静(n贸ng)鎴舵暩(sh霉)閲忓畬鍏ㄧ浉鍚岀殑鎵惰钵骞查儴锛屽晱浠婚伕1鍚嶆壎璨у共閮�锛屽叾鐣�(d膩ng)鍛ㄦ渶澶氬彲鑳借蛋瑷簡澶氬皯鎴惰钵鍥拌静(n贸ng)鎴�?
A.24
B.26
C.28
D.30
5.鏌愬柈浣嶅勾鍒濈劇鍎熺偤鐢叉潙寤鸿ō(sh猫)-涓€鍊�(g猫)鍏変紡鐧�(f膩)闆荤珯锛屾瘡骞寸櫦(f膩)闆�2.5钀崈鐡︽檪(sh铆)锛屾瘡鍗冪摝鏅�(sh铆)鏀剁泭鐐�1鍏�銆傝┎鐧�(f膩)闆荤珯寤烘垚鐣�(d膩ng)骞寸董璀�(h霉)鎴愭湰鐐�1000鍏�锛屽線鍚庢瘡骞寸殑缍(h霉)鎴愭湰閮芥瘮涓�-骞撮珮1000鍏�銆傚亣濡傜櫦(f膩)闆荤珯鐨勬敹鐩婃鐢叉潙鎵€鏈�锛岀董璀�(h霉)鎴愭湰涔熺敱鐢叉潙鏀嚭锛屽墖瑭茬櫦(f膩)闆荤珯绱▓(j矛)鐐虹敳鏉戝壍(chu脿ng)閫�15钀厓鐨勫噲鏀剁泭(绺芥敹鐩婁竴绺界董璀�(h霉)鎴愭湰)鏄湪锛�
A.绗�6骞�
B.绗�7骞�
C.绗�8骞�
D.绗�9骞�
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1 銆丄
瑙ｆ瀽
鏈鑰冩煡鍩虹(ch菙)鎳�(y墨ng)鐢ㄩ銆�
瑷�(sh猫)A銆丅鑰楁潗鍒嗗垾璩艰卜x鍜寉浠�銆傛牴鎿�(j霉)椤屾剰鍙緱50x+70y=710锛屾暣鐞嗗彲寰�5x+7y=71锛�5x灏炬暩(sh霉)闄や簡5灏辨槸0锛屽墖7y灏�(du矛)鎳�(y墨ng)灏炬暩(sh霉)涓嶆槸6灏辨槸1锛屽墖鍙緱x=10锛寉=3(涓嶇鍚堥鎰忥紝A鍗犳瘮瓒呴亷涓€鍗�)銆傚墖x=3锛寉=8銆傚叡瑷�(j矛)3+8=11(浠�)銆�
鍥犳锛岄伕鎿嘇閬搁爡(xi脿ng)銆�
2銆丅
瑙ｆ瀽
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鍋囪ō(sh猫)瑭插晢鍝佺殑鎴愭湰鐐簒鍏�锛岀敱“鍘熷児(ji脿)姣旀垚鏈珮20%”锛屽緱鍘熷児(ji脿)鐐�1.2x锛�“鍦ㄥ師鍍�(ji脿)鐨勫熀绀�(ch菙)涓婃墦鍏姌鍚庡啀娓�200”锛屽緱鍒版竻鍊夎檿鐞嗗敭鍍�(ji脿)鐐�1.2x×0.8-200=0.96x-200锛屾鏅�(sh铆)“骞冲潎姣忎欢鍟嗗搧铏ф悕440”锛屽嵆x-440=0.96x-200锛岃В寰梮=6000銆傚皣x=6000浠ｅ叆1.2x×0.8-200=5560锛屽嵆娓呭€夎檿鐞嗗敭鍍�(ji脿)鐐�5560鍏冦€�“鍦ㄦ竻鍊夎檿鐞嗘湡闁擄紝10钀厓鏈€澶氳臣璨峰灏�”锛�100000÷5560≈17.9锛屼唬鍏ュ晱椤屼腑锛屾渶澶氬彧鑳芥槸17.9锛岄伕鎿囨暣鏁�(sh霉)浣�17銆�
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3銆丏
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姝ら鎴戝€戝彲浠ュ緸鍙嶉潰姹傝В锛屾眰瑭插柈浣嶄唬琛ㄩ殜(du矛)鍑虹窔鐨勬鐜�锛屽嵆姹傜嵅鍕�2鍫村強浠ヤ笂鐨勬鐜�锛屾垜鍊戝緸鍙嶉潰鑰冩叜锛岀敤1娓涘幓鍕�1鍫存垨0鍫寸殑姒傜巼鍗冲彲銆�
鈶犵敳涔�3鍫撮兘杓�?sh霉)姣嶆€曡暱妞�?.6×0.3×0.3=0.054;
鈶＄敳杓�1鍫�锛屼箼璐�1鍫寸殑姒傜巼鐐猴細0.252;
鈶㈢敳璐�1鍫�锛屼箼杓�2鍫寸殑姒傜巼鐐猴細0.4×0.3×0.3=0.036;
鏁呮墍姹傛鐜囩偤锛�1-0.054-0.252-0.036=0.658銆�
鍥犳锛岄伕鎿嘍閬搁爡(xi脿ng)銆�
4銆丅
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鏍规摎(j霉)浠ヤ笂寰楋細姹傚緱x=26銆�
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5銆丆
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