锚杆轴力计、钢筋应力计和应变计的量程宜为设计最大拉力值的( )倍,量测精度不宜低于05%F·S,分辨率不宜低于02%F·S。
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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