鑰冪偣
3
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涓�锛庨�夋嫨棰橈紙鍏?/p>
25
灏忛锛?/p>
1
锛?/p>
锛?018鈥㈤綈榻愬搱灏旓級鎴戜滑鐭ラ亾锛岀敤瀛楁瘝琛ㄧず鐨勪唬鏁板紡鏄叿鏈変竴鑸剰涔夌殑锛岃浠?/p>
缁嗗垎鏋愪笅鍒楄祴浜?/p>
3a
瀹為檯鎰忎箟鐨勪緥瀛愪腑涓嶆纭殑鏄紙
锛?/p>
A
锛庤嫢钁¤悇鐨勪环鏍兼槸
3
鍏?/p>
/
鍗冨厠锛屽垯
3a
琛ㄧず涔?/p>
a
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B
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a
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3a
琛ㄧず杩欎釜绛夎竟涓夎褰㈢殑鍛ㄩ暱
C
锛庡皢涓�涓皬鏈ㄥ潡鏀惧湪姘村钩妗岄潰涓婏紝鑻?/p>
3
琛ㄧず灏忔湪鍧椾笌妗岄潰鐨勬帴瑙﹂潰绉紝
a
琛ㄧず
妗岄潰鍙楀埌鐨勫帇寮猴紝鍒?/p>
3a
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D
锛?/p>
鑻?/p>
3
鍜?/p>
a
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鍒?/p>
3a
琛ㄧず杩欎釜涓や綅
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A
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/
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3a
琛ㄧず涔?/p>
a
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姝ｇ‘锛?/p>
B
銆佽嫢
a
琛ㄧず涓�涓瓑杈逛笁瑙掑舰鐨勮竟闀匡紝鍒?/p>
3a
琛ㄧず杩欎釜绛夎竟涓夎褰㈢殑鍛ㄩ暱锛屾纭紱
C
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3
琛ㄧず灏忔湪鍧椾笌妗岄潰鐨勬帴瑙﹂潰绉紝
a
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3a
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D
銆?/p>
鑻?/p>
3
鍜?/p>
a
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鍒?/p>
30+a
琛ㄧず杩欎釜涓?/p>
浣嶆暟锛屾閫夐」閿欒锛?/p>
鏁呴�夛細
D
锛?/p>
2
锛庯紙2018鈥㈠ぇ搴嗭級鏌愬晢鍝佹墦涓冩姌鍚庝环鏍间负
a
鍏冿紝鍒欏師浠蜂负锛?/p>
锛?/p>
A
锛?/p>
a
鍏?/p>
B
锛?
a
鍏?/p>
C
锛?/p>
30%a
鍏?/p>
D
锛?
a
鍏?/p>
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銆愯В绛斻�戣В锛氳璇ュ晢鍝佸師浠蜂负锛?/p>
x
鍏冿紝
鈭垫煇鍟嗗搧鎵撲竷鎶樺悗浠锋牸涓?/p>
a
鍏冿紝
鈭村師浠蜂负锛?/p>
0.7x=a
锛?/p>
鍒?/p>
x=
a
锛堝厓锛夛紟
鏁呴�夛細
B
锛?/p>