A.8

B.16

C.2

D.4

A.Cannot use tube or bolt in the room

B.Indoor dome cameras can be installed in the walkway, elevator hall, entrance and exit, etc.

C.The hemispherical ceiling installation has poor aesthetics

D.Indoor dome cameras generally adopt vertical pole installation

A.During data retrieval, the platform supports online retrieval across multi-level visual galleries

B.Since the upper and lower units of the visual library system are cascaded, the application platforms of different levels are exactly the same

C.All of the above options are correct

D.The video gallery application platform does not support user management

A.RS485 interface

B.PoE interface

C.COM_CAN interface

D.POE+ interface

A.True

B.False