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999?1001
11
? 6.53?6.530 2??18?? 46
2?2.125????????? ???0.59????????????????? 3?
5
= ? ?8 = 10 ???= ? ?% = ? ??? 8
4??????????????????
52 201 3007 235 1688 694 7324335 ??2???? ??
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3
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9?????????200???????120???????????????????? ?????? ??
10????????????8?????????????????????????????????????80??????????????( )?????
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12????????????? 15?????????????? ? 13??????????????????????? ?
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17???m[m(m?n)?n]?n = 1,?m?n???? ??(A)0 (B) (C) 1(D) 2
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?361?99? 0.7?3.8?4.2?9.3
3133121???????2251 5454518729
20?????X?
111
?2?5 ?5 = ?X ??2X =
224
??
21???????????????2008????????????????????????2005????????????362.9????2006????????????390.3????2006????????????2005???????
22??????????80????????????????????????60???????????????3.5?????????????????????? 23?????????????522?????????????????????????84??????90??????????????????
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12
3 7? 54 108? 150 9? 2 ?3 73
10?1 ?6000000 11? 40 12? 502.413? ?? 1
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20 C
21 D
22 C
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123
? 2.31.5?4.50.75 ??
67712
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635
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6
113721
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3351153
423711
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37
=2 ??3?= ??2?
5152
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7
26????(???12?????3?)
?361?99? 0.7?3.8?4.2?9.3
=361?100?1??1? =?0.7?9.3??(3.8?4.2)??1? =261?1 ??2? =10?8 ??2? =262 ??3? =18 ??3? 3133121???????2251 545451872931329222=(?) ??1? =????1?5445151332
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27?????X?(???6?????3?)
111
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224
111
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1
2.5X = 2.5??2? 2X = ??2?
41
X = 1 ??3?X = ??3?
8
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29??????(???4?)
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2
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2
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84
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1
X = 48??2.5 ? 56
X = 48??3.5? 5
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2
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111
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1200
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81218191819
3811
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1819193
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发表于 2019-9-13 23:46:11