A.True

B.False

A.Realize service registration and discovery through file operations, and maintain inter-service communication

B.The purpose is to realize the management of third-party apps

C.The framework is developed based on the Android kernel

D.Mainly responsible for providing external interface services

A.Indoor corridors with sufficient light

B.Subway turnstile

C.Park area, large population

D.Security check channel

A.Fault alarm

B.Real-time monitoring data

C.Provide a transmission network for the camera body

D.Powering the camera

A." Prevention and control circle " refers to the enclosed area based on checkpoints, traffic hubs, and loops that construct access areas

B." Prevention and control line " refers to the construction of security areas with grid units such as streets, communities, and parks

C." Prevention and control block " refers to the construction of key units, densely populated areas and other units

D." Prevention and control points " are main and secondary arterial roads, and key roads that are intertwined horizontally and vertically in the weaving area of traffic hubs.