2021骞村寳浜叕鍕�(w霉)鍝¤€冭│琛屾脯鏁�(sh霉)閲忛棞(gu膩n)绯绘瘡鏃ヤ竴绶达紙19锛�
鐎忚
鏀惰棌
2021骞村寳浜叕鍕�(w霉)鍝¤€冭│琛屾脯鏁�(sh霉)閲忛棞(gu膩n)绯绘瘡鏃ヤ竴绶达紙19锛�
1.涓€鎺掗殜浼嶅叡鏈�19鍊嬩汉锛岀珯鍦ㄦ涓枔鐨勬槸绗咕鍊嬩汉?( )
A.7
B.8
C.9
D.10
2.鏈変竴闅婂＋鍏垫帓鎴愯嫢骞插堡鐨勪腑绌烘柟闄�锛屽灞や汉鏁�(sh霉)鍏辨湁60浜�锛屼腑闁撲竴灞ゅ叡44浜猴紝鍓囪┎鏂归櫍澹叺鐨勭附?c猫)钘�?sh霉)鏄�( )銆�
A.156浜�
B.210浜�
C.220鍊�
D.280鍊�
3.鍏╁垪鐏粖鍚屽悜鑰岃锛岀敳杌婃瘡灏忔檪琛�54鍗冪背锛屼箼杌婃瘡灏忔檪琛�72鍗冪背銆傜敳杌婁笂涓€涔樺鐧�(f膩)鐝�(xi脿n)锛氬緸涔欒粖杌婇牠缍�(j墨ng)閬庝粬鐨勮粖绐楁檪闁嬪鍒颁箼杌婅粖灏剧稉(j墨ng)閬庝粬鐨勮粖绐楀叡鐢ㄤ簡70绉掞紝涔欒粖鐨勮粖闀锋槸( )绫�銆�
A.700
B.400
C.300
D.350
4.鐢层€佷箼銆佷笝銆佷竵鍥涗汉鐐虹伣(z膩i)鍗€(q奴)鎹愭锛岀敳鎹愭鏁�(sh霉)鏄彟澶栦笁浜烘崘娆剧附鏁�(sh霉)鐨勪竴鍗�锛屼箼鎹愭鏁�(sh霉)鏄彟澶栦笁浜烘崘娆剧附鏁�(sh霉)鐨�1/3锛屼笝鎹愭鏁�(sh霉)鏄彟澶栦笁浜烘崘娆剧附鏁�(sh霉)鐨�1/4锛屼竵鎹愭169鍏冦€傚晱鍥涗汉涓€鍏辨崘浜嗗灏戦將?( )A.780鍏傿.890鍏�
C.1183鍏�
D.2083鍏�
婧Θ鎻愮ず锛�榛炴搳涓嬮爜鏌ョ湅2021骞村寳浜叕鍕�(w霉)鍝¤€冭│琛屾脯鏁�(sh霉)閲忛棞(gu膩n)绯绘瘡鏃ヤ竴绶达紙19锛夌殑绛旀銆�2021骞村寳浜叕鍕�(w霉)鍝¤€冭│灏囦簬浠婂勾12鏈堜唤鑸夎锛屽皬绶ㄦ帹钖﹀悇浣嶈€冪敓浣跨敤鐠�(hu谩n)鐞冪恫(w菐ng)鏍� 鍏嶈不闋�(y霉)绱勭煭淇℃彁閱�鏈嶅嫏(w霉)锛岄爯(y霉)绱勬垚鍔熷彲鍦�2021骞村寳浜叕鍕�(w霉)鍝″牨鍚嶆檪闁撱€佺瓎瑭︽檪闁撶⒑瀹氭檪鏀跺埌鐭俊閫氱煡锛屾彁閱掑ぇ瀹舵彁鍓嶅仛濂芥簴(zh菙n)鍌�銆�
1.绛旀: D
瑙ｆ瀽:
绔欏湪姝ｄ腑闁撶殑鏄(19+1)÷2=10浜�锛屾晠姝ｇ⒑绛旀鐐篋銆�
2.绛旀: C
瑙ｆ瀽:
鏂归櫍鐩搁劙鍏╁堡浜烘暩(sh霉)鐩稿樊鏄�8锛�(60-44)÷8=2锛屽墖涓€鍏辨湁2×2+1=5灞�锛屽＋鍏电附?c猫)钘�?sh霉)鏄�44×5=220銆傛晠姝ｇ⒑绛旀鐐篊銆�
绌哄績鏂归櫍鐨勮▓绠楀叕寮忥細(1)绺�?c猫)钘�?sh霉)=灞ゆ暩(sh霉)*涓枔浜烘暩(sh霉);(2)涓枔涓€灞ょ偤44浜�锛屽墖绺�?c猫)钘�?sh霉)鎳�(y墨ng)鐐�44鐨勫€嶆暩(sh霉)锛屽彧鏈塁闋呮纰�銆�
3.绛旀: D
瑙ｆ瀽:
鐢茶粖鐨勯€熷害鏄�54鍗冪背/灏忔檪=15绫�/绉�锛屼箼杌婄殑閫熷害鐐�72鍗冪背/灏忔檪=20绫�/绉掋€傝┎閬嬪嫊閬庣▼瀵﹂殯鏄箼杌婅粖灏捐垏瑭蹭箻瀹㈢殑杩藉強閬庣▼锛岃拷鍙婅窛闆㈢偤涔欒粖鐨勮粖闀枫€傚洜姝や箼杌婄殑杌婇暦鐐�(20-15)×70=350绫�锛屾晠姝ｇ⒑绛旀鐐篋銆�
鍏紡锛氳拷鍙婂晱椤�銆傝拷鍙婅窛闆�=(澶ч€熷害-灏忛€熷害)×杩藉強鏅傞枔銆�
4.绛旀: A
瑙ｆ瀽:
瑷�(sh猫)鎹愭绺芥暩(sh霉)鐐�60x鍏�锛屽墖鐢�“鐢叉崘娆炬暩(sh霉)鏄彟澶栦笁浜烘崘娆剧附鏁�(sh霉)鐨勪竴鍗�”寰楀埌鐢叉崘娆�20x鍏�;鐢�“涔欐崘娆炬暩(sh霉)鏄彟澶栦笁浜烘崘娆剧附鏁�(sh霉)鐨�1/3”寰楀埌涔欐崘娆�15x鍏�;鐢�“涓欐崘娆炬暩(sh霉)鏄彟澶栦笁浜烘崘娆剧附鏁�(sh霉)鐨�1/4”寰楀埌鐢叉崘娆�12x鍏冦€�
鐢遍鎰忓緱鏂圭▼锛� 20x+15x+>12x+>169=60x 瑙ｅ緱x=13 鍥犳60x=780锛屾晠姝ｇ⒑绛旀鐐篈銆�
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