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1
椤碉紙鍏?/p>
26
椤碉級
2015
骞存睙鑻忕渷鑻忓窞甯傚お浠撳競涓�冩暟瀛︽ā鎷熻瘯鍗?/p>
涓�銆侀�夋嫨棰橈紙鏈ぇ棰樺叡
10
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3
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30
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1
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鐨勭浉鍙嶆暟鏄紙
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A
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2
B
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锕?/p>
C
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0.5
D
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涓�
2
2
锛庝竴绉嶅ぇ绫崇殑璐ㄩ噺鏍囪瘑涓?/p>
鈥?/p>
锛?/p>
50
卤
0.5
锛夊崈鍏?/p>
鈥?/p>
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锛?/p>
A
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50.0
鍗冨厠
B
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50.3
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C
锛?/p>
49.7
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D
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49.1
鍗冨厠
3
锛庝笅鍒楄绠椾腑锛屾纭殑鏄紙
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A
锛?/p>
a
2
鈥?/p>
a
3
=a
6
B
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锛?/p>
a+1
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a
锕?/p>
2
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=a
2
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2
C
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锛?/p>
ab
3
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2
=a
2
b
6
D
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5a
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2a=3
4
锛庝笅鍒楄娉曟纭殑鏄紙
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A
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B
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C
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涓�缁勬暟鎹?/p>
6
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7
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8
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8
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9
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10
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8
D
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S
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2
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S
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2
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5
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1
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2
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3
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6
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6
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A
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B
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C
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D
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6
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绗竴寮犵収鐗囩缉灏忎簡
60%
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灏忎簡
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锛?/p>
A
锛?/p>
20%
B
锛?/p>
30%
C
锛?/p>
40%
D
锛?/p>
50%
7
锛庡凡鐭ヤ簩娆″嚱鏁?/p>
y=x
2
+1
鐨勫浘璞′笂鏈変竴鐐?/p>
P
锛?/p>
1
锛?/p>
2
锛?/p>
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y=x
2
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2x
锕?/p>
1
锛屽垯鐐?/p>
P
缁忚繃璇ユ骞崇Щ鍚庣殑鍧愭爣涓猴紙
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A
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锛?/p>
2
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1
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B
锛?/p>
锛?/p>
2
锛岋梗
1
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C
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锛?/p>
1
锛岋梗
2
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D
锛?/p>
锛?/p>
0
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5
锛?/p>
8
锛庡鍥撅紝鐩寸嚎
AC
鐨勫悓渚ф湁
Rt
鈻?/p>
ABD
鍜?/p>
Rt
鈻?/p>
BCE
锛屽凡鐭モ垹
ABD=
鈭?/p>
C=90
掳
锛屸垹
A=45
掳
锛屸垹
E=30
掳
锛庤嫢
鈻?/p>
ABD
缁曠偣
B
椤烘椂閽堟柟鍚戞棆杞紝褰撲袱涓笁瑙掑舰鏈変竴杈瑰钩琛屾椂锛屾棆杞殑瑙掑害锛堝皬浜?/p>
180
掳
锛夋槸锛?/p>
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