What is the purpose of keeping the work site tidy?

Huawei's recommended grounding resistance must be less than how much ohms?

If you are sitting in the back seat of the car, there is no need to wear a seat belt.

The traditional MSO access network is constituted by HUB room and waht parts, to be called HFC (Hybrid Fiber Coaxial) network? (Multiple Choice)

In the process of replacing the signal cable and the power cable, the cable connection can be directly implemented according to the cable label. It is not necessary to perform the line sequence check according to the cable route.