岩石的声波纵波速为5000m/s,岩体的声波纵波速为4000m/s,岩体的体积节理数目为6条/米3,单轴极限抗压强度为455MPa。则岩体的完整性系数为( )?
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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