已知某线路最大负荷所对应的阻抗一次值为121.3W,相应功率因数角为30°,该线路阻抗角为75°。该线路所配置的距离保护III段,采用方向阻抗圆特性。整定阻抗二次值为()欧姆。(可靠系数取1.3,返回系数取1.1,自起动系数取2,电压互感器变比为1100,电流互感器变比为120。)
A. 6.54
B. 6.55
C. 6.52
D. 6
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According to the regulatory of the Food and Drug Administration, Clostridium botulinum must be destroyed on sterilization, and is required()
A. D-values
B. 6D-values
C. 12D-values
D. 不知道
The slope of the decimal reduction curve increases as the magnitude of the elevated temperature reduces()
大学中的系主任,对于其所在的系而言,属于(高层 )管理者()