Devices that supply power when the commercial utility power system fails are called which of the following? 当商业公用电源系统失效后，需使用下列哪一类供电设备？（）A、power conditioners电压稳压器B、power filters电源滤波器C、power dividers功率分配器
Devices that supply power when the commercial utility power system fails are called which of the following? 当商业公用电源系统失效后，需使用下列哪一类供电设备？（）
- A、power conditioners电压稳压器
- B、power filters电源滤波器
- C、power dividers功率分配器
相关考题：
When a grounding strap is not available, a technician can ground by touching the computer’s:() A. power supply.B. CPU fan.C. memory chips.D. motherboard.
Which of the following is the MOST important physical consideration when deploying a new server?() A. Humidity monitors, Biometrics, and fire suppressionB. Cooling, rack space, and power requirementsC. Service level agreements, uninterruptible power supply (UPS) deployment, and CCTVD. Biometrics, fire suppression, and power requirements
When a grounding strap is not available, a technician can ground by touching the computer’s:（）A、power supply.B、CPU fan.C、memory chips.D、motherboard.
Which of the following will help dissipate heat through the heat sink when upgrading a CPU? （）A、Case fanB、Thermal compoundC、Motherboard riserD、Power supply
A technician receives a computer for repair and observes that the fan on the power supply is not moving. Which of the following should the technician do？ （）A、Move the power supply voltage switch to 220 volts.B、Add an additional fan to help cool the computer.C、Replace the cable that attaches the power supply to the motherboard.D、Replace the power supply.
Which of the following is the MOST likely to cause a server power supply fan to fail but allows the power supply to still be functional？（）A、DustB、Power SurgeC、Excessive humidityD、High temperatures
The technician has replaced a power supply with an identical power supply, and now the high end graphics card is not working. Which of the following should the technician check?（）A、The memoryB、The CMOS batteryC、The PCIe power jackD、The processor for chip creep
How many volts does a power supply’s 4-pin Molex connector carry to internal devices?（）A、2.5 voltsB、5 voltsC、6 voltsD、15 volts
A technician has just installed a new power supply into a desktop computer and now the computer will not turn on. Which of the following is the MOST likely cause?（）A、The voltage selector switch on the power supply is set incorrectly.B、The 3.3v power line is connected to the wrong input on the motherboard.C、The new power supply voltage rating is too high.D、The 12v power cord is installed incorrectly.
A server will not power on. Which of the following devices should the administrator use FIRST to determine the problem?（）A、Loop back plugsB、Power supply testerC、System logsD、TDR
When replacing a power supply， what MUST the technician observe？（）A、voltageB、currentC、wattageD、resistance
Which of the following factors is the MOST important to consider when choosing an uninterruptible power supply （UPS） for a single server？ （）A、 UPS form factorB、 Server form factorC、 Server power supplys wattage ratingD、 Desired runtime
Which of the following is the MOST important physical consideration when deploying a new server？（）A、 Humidity monitors， Biometrics， and fire suppressionB、 Cooling， rack space， and power requirements冷C、 Service level agreements， uninterruptible power supply （UPS） deployment， and CCTVD、 Biometrics， fire suppression， and power requirements
Which of the following is the MOST important physical consideration when deploying a new server?（）A、Humidity monitors, Biometrics, and fire suppressionB、Cooling, rack space, and power requirementsC、Service level agreements, uninterruptible power supply (UPS) deployment, and CCTVD、Biometrics, fire suppression, and power requirements
When a power supply does not meet minimum requirements for a motherboard, which of thefollowing can happen?（）A、Computer will not POSTB、Computer will overheatC、Monitor will not power onD、Processor will not run at proper speed
You have a portable computer that runs Windows XP Professional. The computer supports Advanced Configuration and Power Interface (ACPI). You need to ensure that the computer enters Sleep Mode when you close the lid of the computer. What should you do?（） A、From Control Panel, configure the Power Options. B、From the System properties, configure the Data Execution Prevention settings. C、From the Services console, set the Startup type for the Human Interface Devices service to Manual.D、From the Services console, set the Startup type for the Uninterruptable Power Supply service to Manual.
单选题A server will not power on. Which of the following devices should the administrator use FIRST to determine the problem?（）ALoop back plugsBPower supply testerCSystem logsDTDR
单选题Devices that supply power when the commercial utility power system fails are called which of the following? 当商业公用电源系统失效后，需使用下列哪一类供电设备？（）Apower conditioners电压稳压器Bpower filters电源滤波器Cpower dividers功率分配器
单选题Which of the following factors is the MOST important to consider when choosing an uninterruptible power supply （UPS） for a single server？ （）A UPS form factorB Server form factorC Server power supplys wattage ratingD Desired runtime
单选题How many volts does a power supply’s 4-pin Molex connector carry to internal devices?（）A2.5 voltsB5 voltsC6 voltsD15 volts
单选题When the vessel entering the dock, the first work that engineer should contact with the shipyard （）Areleasing the boiler waterBthe explosion detecting and cleaning for the fuel tankCthe docking project related itemDshore power and fire fighting water supply
单选题Which of the following is the MOST likely to cause a server power supply fan to fail but allows the power supply to still be functional？（）ADustBPower SurgeCExcessive humidityDHigh temperatures
单选题A server will not power on. Which of the following devices should the administrator use FIRST to determine the problem？（）A Loop back plugsB Power supply testerC System logsD TDR
单选题Emergency generator is installed on board mainly to （）Aconnect to the busbar when the load increasingBsupply power specially to charging panelCbe put into operation during the ship arriving at or leaving portDensure the power supply to critical equipment after the main switchboard out of power
单选题“380V/220V Y/△” noted on the nameplate of a non-synchronous motor means that（）Athe armature terminals of the motor should be connected in star formation when voltage of power supply is 380Bthe armature terminals of the motor should be connected in star formation when voltage of power supply is 220Cboth A and B are correctDthe armature terminals of the motor should be connected in reverse ways of A and B
单选题Which of the following is the MOST important physical consideration when deploying a new server？（）A Humidity monitors， Biometrics， and fire suppressionB Cooling， rack space， and power requirements冷C Service level agreements， uninterruptible power supply （UPS） deployment， and CCTVD Biometrics， fire suppression， and power requirements
单选题Which of the following should the technician do FIRST when replacing a motherboard?（）AUse a benchmarking toolBUse anti-static wrist bandCRemove the CPUDRemove the power supply