But reducing spending further to what Rio optimistically calls “sustaining levels” – with capex of just $2.5bn – would be risky. Maintenance capex tends to be the minimum auditors allow to avoid big depreciation charges, leaving asset owners badly positioned for an upturn.
不过，将支出进一步降低至力拓乐观认为的“生存水平”——资本支出仅25亿美元——会很危险。维持性资本支出一般是审计人员所准许的、避免高额折旧费的最低支出，让资产所有者很难出现转机。
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