A.10s B.30s C.60s D.100s
A.﹣80dBm B.﹣90dBm C.﹣95dBm D.﹣100dBm
A.掉话总次数/接通总次数×100% B.掉话总次数/试呼叫总次数×100% C.接通总次数/掉话总次数×100% D.试呼叫总次数/掉话总次数×100%