Which is correct in the following statement on the location of the installation of AP? (Multiple choice)
A . For aesthetic needs, AP can give priority to be placed in the ceiling
B . If the site for the overall ceiling, AP should be considered to be placed in the vicinity of the maintenance service
C . Ceiling materials are generally very thin, the impact of coverage can be ignored
D . When the wall is installed or installed in the ceiling, it may be necessary to drill, the survey and the property as soon as possible to confirm whether feasible
Answer: ABD