正解:C
"The compass-style indicators in the user interface display the current pan direction of a PTZ camera. This helps operators orient themselves and know which direction the camera is facing in real-time."
- Axis Communications Academy, Network Video Fundamentals, 2022
"On-screen compass indicators are designed to show operators the camera's current field of view, making navigation and incident tracking easier."
- Axis PTZ Control User Manual
References:
Axis Communications Academy, Network Video Fundamentals, 2022 (p. 61)
Axis PTZ Control User Manual