问题:单选题Which of the following does an astronomical time clock do?()A Determines the ambient light at night with a photocell.B Calculates sunset and sunrise times based on geographical area.C Determines the start and end of each of the seasons.D Synchronizes t...
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问题:单选题If the speakers in an installation are out of phase, this means that()A the subwoofer is at the wrong angle.B the front and rear speakers are reversed.C the polarity of the speakers are reversed.D the angle of the speakers are incorrect....
问题:单选题Which of the following is MOST likely causing an intermittent flashing LED on an IR receiver when the remote control is not being used?()A The power supply is faulty and should be replaced.B The heat from a heating, ventilation, and air conditioning (H...
问题:单选题Which of the following is the standard aspect ratio for HDTV?()A 2.35:1B 4:3C 1.33:1D 1.78:1...
问题:单选题The native resolution for 1080i is()A 1920×1280B 1920×1080C 1280×1080D 1280×720...
问题:单选题When certifying a CAT5 cable installation the integrator must perform which of the following tests?()A Measure ImpedanceB Calculate LatencyC Measure AttenuationD Measure Resistance...
问题:单选题Each time the distance from the speaker is doubled, volume decreases by().A 3dBB 6dBC 12dBD 24dB...
问题:单选题Which of the following is the correct signal flow for an analog multi-room audio system?()A Source,Volume Control,Speaker,AmpB Source,Amp,Volume Control,SpeakerC Amp,Source,Volume Control,SpeakerD Speaker,Amp,Volume Control,Source...
问题:单选题Which of the following is the correct wiring order for an RJ-11 two line jack?()A Black,Green,Red,YellowB Black,Red,Green,YellowC Red,Black,Green,YellowD Yellow,Red,Green,Black...
问题:单选题When installing a security system, which of the following connectors would be used to connect the security system to the telephone service demarcation?()A RJ-31xB RJ-11C RS-232D DB-9...
问题:单选题A customer notifies the integrator that the system keypad reports trouble at a window. Upon inspection, the customer finds the window closed and locked; the customer resets the system and it fails to correct the issue. Which of the following steps shou...
问题:单选题When installing cables, which of the following is the BEST way of identifying the individual cables?()A A cable chart mounted in the cabinetB A label at the tip of the cableC A label within six inches at each end of the cableD A penciled notation on th...
问题:单选题Which of the following is the recommended placement of the rear surround speakers in a 5.1 surround installation?()A Directly to the left and right and slightly in front of the listenerB Directly to the left and right and slightly behind the listenerC ...
问题:单选题Which of the following is a RF peer to peer mesh protocol used for lighting and other residential electronics?()A Z-WaveB X10C CEBusD Wi-Fi...
问题:单选题Wires that are installed in air returns above a ceiling must be()A fire proofB fiberglass coatedC plenum ratedD teflon coated...
问题:单选题Which of the following is a diplexer used for?()A Allows two satellite tuners to use the same dish.B Connects the low noise block down converter (LNB) to the multi-switch.C Combines satellite and over the air (OTA) signals.D Allows one LNB to use two s...
问题:单选题RG-6 coaxial cable is typically used in all of the following applications:()A multi-room audio, telephone, intercom and temperature control.B thermostat, CCTV, smoke detectors and keypads.C home theater, lighting control and multi-room audio.D video, d...