Continuous short buzzes on the telephone indicate that the line is busy after you dial the telephone number.

admin2013-11-25  100

问题 Continuous short buzzes on the telephone indicate that the line is busy after you dial the telephone number.

选项 A、open
B、out of order
C、disengaged
D、in use

答案D

解析
转载请注明原文地址:https://kaotiyun.com/show/5bhd777K
0

最新回复(0)