试题详情
- 单项选择题As an experienced technician, you are responsible for Technical Support. A customer calls to ask the best signal level and noise level for cell phone. How to respond?（）
A、-40dBm signal and -90dBm noise
B、-50dBm signal and -90dBm noise
C、-30dBm signal and -90dBm noise
D、-20dBm signal and -90dBm noise
- A
关注下方微信公众号，在线模考后查看
热门试题