A. Call Drop Rate=LE-RAB AbnormRel/(LE-RAB AbnormRel+LE-RAB normRel)*100% B. Call Drop Rate=LE-RAB AbnormRel/RRC ConnectionSetup Success*100% Call Drop Rate=LE-RAB AbnormRel/LE-RAB Success*100% D. Call Drop Rate=LE-RAB AbnormRel/LE-RAB normRel*100%
A. 煤矿井下用电气设备 B. 非煤矿井下用电气设备 C. 油田用用电气设备 D. 其它
A. 正确 B. 错误