2020骞存渤鍖楀叕鍕�(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8鏈�20鏃ワ級
鐎忚
鏀惰棌
2020骞存渤鍖楀叕鍕�(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8鏈�20鏃ワ級
1.浜斿€�(g猫)鏁�(sh霉)瀵垚涓€鎺�锛屽墠涓夊€�(g猫)鏁�(sh霉)骞冲潎鍊兼槸15锛屽悗鍏╁€�(g猫)鏁�(sh霉)骞冲潎鍊兼槸10锛屽墖閫欎簲鍊�(g猫)鏁�(sh霉)鐨勫钩鍧囧€兼槸( )銆�
A.11
B.12.5
C.13
D.14
2.鏌愬晢鍝佹寜瀹氬児(ji脿)鐨�80%(鍏姌)鍑哄敭锛屼粛鑳界嵅寰�20%鐨勫埄娼�锛屽晱瀹氬児(ji脿)鏅�(sh铆)鏈熸湜鐨勫埄娼ょ巼鏄灏�?( )
A.50%
B.40%
C.30%
D.20%
3.閬庢鏂归珨涓€鍋�(c猫)闈㈢殑鍏╂灏嶈绶氱劍榛�(di菐n)锛岃垏涓嬪簳闈㈠洓鍊�(g猫)闋傞粸(di菐n)閫ｅ緱涓€鍥涙１閷愶紝鍓囧洓妫遍寪鑸囨鏂归珨鐨勯珨绌嶆瘮鏄灏�?( )
A.1鈭�8
B.1鈭�6
C.1鈭�4
D.1鈭�3
4.鏌愯秴甯傞噰鐢ㄤ績閵风殑鎵嬫锛屽嚒璩艰卜鍍�(ji脿)鍊�200鍏冧互涓婄殑鍟嗗搧鍙互鍎�(y艒u)鎯�20%锛岄偅涔堢敤320鍏冮將鍦ㄨ┎瓒呭競鏈€澶氬彲浠ヨ卜涓嬪児(ji脿)鍊�( )鍏冪殑鍟嗗搧銆�
A.350
B.384
C.400
D.420
5.鏌愰剦(xi膩ng)閹�(zh猫n)鑸夎閬�(y霉n)鍕�(d貌ng)鏈�锛屽叡鏈夐暦璺�銆佽烦閬�(yu菐n)鍜岀煭璺戜笁鍊�(g猫)闋�(xi脿ng)鐩€傚弮鍔犻暦璺戠殑鏈�49浜�锛屽弮鍔犺烦閬�(yu菐n)鐨勬湁36浜猴紝鍙冨姞鐭窇鐨勬湁28浜�锛屽彧鍙冨姞鍏朵腑鍏╁€�(g猫)闋�(xi脿ng)鐩殑鏈�13浜猴紝鍙冨姞鍏ㄩ儴闋�(xi脿ng)鐩殑鏈�9浜�銆傞偅涔堝弮鍔犺┎娆￠亱(y霉n)鍕�(d貌ng)鏈冪殑绺�?c猫)钘�?sh霉)鐐�( )銆�
A.75
B.82
C.88
D.95
婧Θ鎻愮ず锛�榛�(di菐n)鎿婁笅闋佸彲鏌ョ湅2020骞存渤鍖楀叕鍕�(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8鏈�20鏃ワ級绛旀銆�2020骞存渤鍖楀叕鍕�(w霉)鍝¤€冭│鏅�(sh铆)闁撶偤8鏈�22鏃ワ紝寤鸿鍚勪綅鑰冪敓浣跨敤鐠�(hu谩n)鐞冪恫(w菐ng)鏍� 鍏嶈不(f猫i)闋�(y霉)绱勭煭淇℃彁閱�鏈嶅嫏(w霉)锛岄爯(y霉)绱勬垚鍔熸渻鍦ㄧ瓎瑭︽檪(sh铆)闁撳埌渚嗗墠鏀跺埌鐭俊锛屾彁閱掑ぇ瀹跺仛濂借€冨墠婧�(zh菙n)鍌�銆�
1.绛旀: C
銆愯В鏋愩€戯細鏍规摎(j霉)椤屽共鍙煡锛屽墠涓夊€�(g猫)鏁�(sh霉)鐨勫拰鐐�15×3=45锛屽悗鍏╁€�(g猫)鏁�(sh霉)鐨勫拰鐐�10×2=20锛屽墖浜斿€�(g猫)鏁�(sh霉)鐨勫拰鐐�65锛屽叾骞冲潎鏁�(sh霉)鐐�13銆傛晠姝ｇ⒑绛旀鐐篊銆�
2.绛旀: A
銆愯В鏋愩€戯細瑷�(sh猫)鎴愭湰m锛屽畾鍍�(ji脿)鐐簄锛屽墖鏈熸湜鍒╂饯鐜囩偤n÷m-1銆�
鐢遍鎰忓彲寰�锛�0.8n=(1+0.2)m锛宯÷m=1.5锛屽墖鏈熸湜鍒╂饯鐜囩偤1.5-1=50%锛屾晠姝ｇ⒑绛旀鐐篈銆�
3.绛旀: B
銆愯В鏋愩€戯細
瑷�(sh猫)姝ｆ柟楂旂殑閭婇暦鐐�2锛屽墖鍏堕珨绌嶇偤8;姝ゅ洓妫遍寪鐨勯珮鐐�1锛屽簳闈㈢⿳鐐�4锛屾湁妫遍寪楂旂⿳鍏紡鍙緱姝ゅ洓妫遍寪鐨勯珨绌嶇偤锛�1/3×4×1=4/3锛屽洜姝ゅ洓妫遍寪鑸囨鏂归珨鐨勯珨绌嶆瘮鐐猴細4/3锛�8=1锛�6锛屾晠閬告搰B閬搁爡(xi脿ng)銆�
4.绛旀: C
銆愯В鏋愩€戯細瑷�(sh猫)鍙互璨峰埌m鍏冪殑鍟嗗搧锛屽墖m×(1-20%)=320锛岃В涔嬪緱m=400銆傛晠姝ｇ⒑绛旀鐐篊銆�
5.绛旀: B
銆愯В鏋愩€戯細 鍏稿瀷涓夐泦鍚堝鏂ュ晱椤�銆傛柟娉曚竴锛氫唬鍏ュ叕寮廇+B+C=x+2y+3z锛屽緱鍒板紡瀛�49+36+28=x+2×13+3×9锛岃В寰梮=60锛� 鎵€浠ョ附?c猫)钘�?sh霉)鐐�60+13+9=82浜�銆� 鏁呭弮鑰冪瓟妗堢偤B銆傛柟娉曚簩锛氭牴鎿�(j霉)涓夐泦鍚堥煁鎭╁湒锛屽厛鎶婁笁鍊�(g猫)鍦撶浉鍔狅紝鐒跺悗娓涘幓閲嶇枈鐨勯儴鍒�锛屽嵆鐐洪鐩墍姹�锛� 49+36+28-13-2×9=82銆� 鏁呭弮鑰冪瓟妗堢偤B銆�
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