索赔费用的计算方法有[ ]
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
68.承包商在自己的索赔报告中对费用索赔部分进行详细计算,索赔费用的计算方法主要有分项计算法和总费用法。( )
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