RG－6coaxialcableistypicallyusedinallofthefollowingapplications:()A.multi-roomaudio，telephone，intercomandtemperaturecontrol.B.thermostat，CCTV，smokedetectorsandkeypads.C.hometheater，lightingcontrolandmulti-roomaudio.D.video，digitalcable，andsatelliteapplicat
题目
RG－6coaxialcableistypicallyusedinallofthefollowingapplications:()
A.multi-roomaudio，telephone，intercomandtemperaturecontrol.
B.thermostat，CCTV，smokedetectorsandkeypads.
C.hometheater，lightingcontrolandmulti-roomaudio.
D.video，digitalcable，andsatelliteapplications.