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| Unfortunately, its simplicity is also its weakness since it is frequently too simple to represent realistic problems.  | |
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| Unfortunately, its simplicity is also its weakness since it is frequently too simple to represent realistic problems.  | |
| 
 
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| Unfortunately, its simplicity is also its weakness since it is frequently too simple to represent realistic problems.  | |
| 
 
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| Unfortunately, its simplicity is also its weakness since it is frequently too simple to represent realistic problems.  | |









 发表于 2007-9-3 17:50
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发表于 2007-9-3 17:50
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  对了,我有张你去年的PP,你要不要瞅瞅?
 对了,我有张你去年的PP,你要不要瞅瞅?