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鐎忚
鏀惰棌
2021骞存柊鐤嗗叕鍕�(w霉)鍝¤€冭│琛屾脯鏁�(sh霉)閲忛棞(gu膩n)绯荤反缈�(x铆)椤�
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1.绶ㄤ竴鏈浉鐨勬浉闋佺敤浜�270鍊嬫暩(sh霉)瀛�(閲嶅京(f霉)鐨勪篃绠�锛屽闋佺⒓115鐢ㄤ簡2鍊�1鍜�1鍊�5锛屽叡3鍊嬫暩(sh霉)瀛�)锛岄偅涔堥€欐湰鏇镐竴鍏辨湁()
A.117闋�
B.126闋�
C.127闋�
D.189闋�
2.蹇�銆佷腑銆佹參涓夎紱杌婂悓鏅傚緸鍚屼竴鍦伴粸(di菐n)鍑虹櫦(f膩)锛屾部鍚屼竴鍏矾杩借稌鍓嶉潰鐨勪竴杓涢◣杌婁汉銆傞€欎笁杓涜粖鍒嗗垾鐢ㄤ簡6鍒嗛悩銆�10鍒嗛悩銆�12鍒嗛悩杩戒笂楱庤粖浜�锛岀従(xi脿n)鍦ㄧ煡閬撳揩杌婃瘡灏忔檪琛�24鍏噷锛屼腑閫熻粖姣忓皬鏅傝20鍏噷锛屽墖鎱㈣粖姣忓皬鏅傝( )
A.19鍏噷
B.14鍏噷
C.15鍏噷
D.18鍏噷
3.鐢�銆佷箼鍏╁€嬫腐鍙ｄ箣闁撶殑璺濋洟鐐�120鍗冪背銆傜敳娓彛婊暀浜�180浜�锛岃灏囬€欎簺婊暀涔樺闋嗘祦閫佸埌涔欐腐鍙ｃ€傜従(xi脿n)娲剧敳娓彛鐨勪竴鑹樺彲涔樺潗100浣嶄箻瀹㈢殑瀹㈣埞渚嗗畬鎴愰€侀仈(d谩)浠诲嫏(w霉)銆傚凡鐭ヨ┎瀹㈣埞鍦ㄩ潨姘翠腑鐨勯€熷害鐐�90鍗冪背/灏忔檪锛岄爢娴佽椐涚殑閫熷害鏄�100鍗冪背/灏忔檪銆傚湪蹇界暐涓婁笅鑸规檪闁撶殑鎯呮硜涓�锛岃┎瀹㈣埞瀹屾垚浠诲嫏(w霉)闇€瑕�()
A.2.7鏅�
B.3.2鏅�
C.3.5鏅�
D.3.9鏅�
瑙ｆ瀽锛�
1.B
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2.A
瑷�(sh猫)楱庤粖浜虹殑閫熷害鐐篨鍏噷姣忓皬鏅�锛屾牴鎿�(j霉)杩藉強璺▼鐩哥瓑鍙垪鍑虹瓑寮忔柟绋嬶細(24-X)×6=(20-X)×10锛岃В寰梄=14锛屾墍浠ヨ拷鍙婅矾绋嬬偤(20-14)×10=60銆傝ō(sh猫)鎱㈣粖姣忓皬鏅傝Y鍏噷锛屽彲寰楁柟绋嬶細(Y-14)×12=60锛岃В寰梇=19銆傚洜姝ゆ湰椤屾纰虹瓟妗堢偤A銆�
3.D
鐢叉腐鍙ｅ叡180浜猴紝姣忔鍙兘閫�100浜�锛屽墖闇€瑕侀€佸叐娆℃墠鑳介€佸畬锛岄€佸叐娆＄殑閬庣▼涔熷氨鏄緸鐢插墠寰€涔欓爢娴佷竴娆�锛屼箼杩斿洖鐢查€嗘祦涓€娆★紝鐢插啀杩斿洖涔欎竴娆�?锛熺棝顑櫉o姘翠腑閫熷害鐐�90鍗冪背/灏忔檪鍗崇偤鑸归€�锛岄爢娴佽€屼笅鏄€熷害鐐�100鍗冪背/灏忔檪锛岄爢?bi膩o)顔╂兌钘璻闁撶偤锛�120/100=1.2灏忔檪銆備笖姘撮€�=闋�?bi膩o)顔浚?鑸归€�=100-90=10鍗冪背/灏忔檪锛屾墍浠ュ鑸归€嗘按閫熷害=鑸归€�-姘撮€�=90-10=80鍗冪背/灏忔檪锛岄€嗘按鐨勪竴瓒熺殑鏅傞枔鐐猴細120/80=1.5灏忔檪銆傚墖鍏遍渶瑕�1.2×2+1.5=3.9灏忔檪銆�
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