知道黃金在地殼裏的儲量和開采成本嗎?醒醒
所有跟帖:
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For most companies it is high
-_學無止境-
♂
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05/07/2012 postreply
08:17:14
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Sorry, I meant not high enough.
-_學無止境-
♂
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05/07/2012 postreply
10:30:56