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单选题
The purpose of a temperature sensing device installed in the stack of a small automatically fired auxiliary steam boiler is to secure the oil burner（）
A
in the event of a flame failure
B
in the event of a stack fire
C
when the water level reach the crown sheet
D
when the feed pump discharge pressure drops to a preset minimum
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更多 “单选题The purpose of a temperature sensing device installed in the stack of a small automatically fired auxiliary steam boiler is to secure the oil burner（）A in the event of a flame failureB in the event of a stack fireC when the water level reach the crown sheetD when the feed pump discharge pressure drops to a preset minimum” 相关考题
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The purpose of input device is () .
A、to enter commandsB、to hold instructionsC、to input dataD、both a and c
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Which command displays the current temperature of a Junos device's components?()
A. show chassis temperature-thresholdsB. show chassis environmentC. show chassis hardwareD. show chassis alarms
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Network equipment supporting the use of flow control mechanisms has been recently installed. What is the purpose of flow control in a data network?()
A. It ensures that data is retransmitted if an acknowledgment is not received.B. It reassembles segments in the correct order on the destination device.C. It provides a mechanism for the receiver to control the transmission speed.D. It regulates the size of each datagram segment.E. All of the above are functions of flow control
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What rhetorical device is used in the sentence He is an all__________purpose basket?
A．Pun.
B．Simile.
C．Metaphor.
D．Transferred epithet.
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What are three pieces of information that the Cisco IOS show inventory command displays on a Cisco ISR Router? （）(Choose three.)A、Installed Hardware serial numbersB、The status of installed hardwareC、Installed hardwareD、Unique Device IdentifierE、system internal temperatureF、main power supply condition
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Which device is installed in user devices and makes wireless connections between them and a network?（）A、Access pointB、BridgeC、RouterD、Client adapter
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Network equipment supporting the use of flow control mechanisms has been recently installed. What is the purpose of flow control in a data network?（）A、It ensures that data is retransmitted if an acknowledgment is not received.B、It reassembles segments in the correct order on the destination device.C、It provides a mechanism for the receiver to control the transmission speed.D、It regulates the size of each datagram segment.E、All of the above are functions of flow control
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A technician is installing an Express Card 54 device into a laptop. How will the device MOST likely be installed?（）A、Into available expansion slotB、Via physical external dongleC、Via internal expansion slotD、Into any available USB slot
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A technician plugs a USB device into the computer. The system tray displays a message that reports the device is installed, but may not work properly. Which of the following is the MOST likely cause of the message?（）A、The device needs a firmware updateB、The device needs an updated driver installedC、The plugged in device is too slow for the USB port speedD、The device is incompatible with the installed version of Windows
考题
The Device Manager in Windows XP shows that an incompatible device driver is installed. Which of the following BEST describes the icon that is displaying next to that device?（）A、Yellow question mark next to deviceB、Black checkmark next to deviceC、Yellow exclamation point next to deviceD、Red X next to the device
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You have been tasked with performing an update to the IDP attack database. Which three requirements areincluded as part of this task？（）A、The IDP security package must be installed after it is downloaded.B、The device must be rebooted to complete the update.C、The device must be connected to a network.D、An IDP license must be installed on your device.E、You must be logged in as the root user
考题
单选题The purpose of an after-cooler is to（）A
reduce the turbocharger operating temperatureB
increase the pressure of the inlet airC
increase the density of the inter airD
reduce the blower operating temperature
考题
单选题A technician is installing an Express Card 54 device into a laptop. How will the device MOST likely be installed?（）A
Into available expansion slotB
Via physical external dongleC
Via internal expansion slotD
Into any available USB slot
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单选题One user has a Video Capture Card installed on her pc. She uses it to capture video pictures. She complains the video capture card is not working properly and she couldn't view captured video. You check out the Device manager, which does not indicate any Video devices installed on your system, but you see a yellow mark placed besides the audio device. What should you do in order to make the video capture device work? （）A
Enable the device in Device manager B
Install new driver from Device Manager C
Disable PNP and install manually D
Copy the manufacturer's driver to WINNT/driver cache/i386/ and then let Windows 2000 to install the device.
考题
单选题Which command displays the current temperature of a Junos device's components?（）A
show chassis temperature-thresholdsB
show chassis environmentC
show chassis hardwareD
show chassis alarms
考题
单选题The purpose of the “set” hand on an aneroid barometer is to（）.A
adjust the barometerB
indicate any change in the reading of the barometerC
provide a correction for height above sea levelD
provide a correction for temperature changes
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多选题You have been tasked with performing an update to the IDP attack database. Which three requirements areincluded as part of this task？（）AThe IDP security package must be installed after it is downloaded.BThe device must be rebooted to complete the update.CThe device must be connected to a network.DAn IDP license must be installed on your device.EYou must be logged in as the root user
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单选题A technician plugs a USB device into the computer. The system tray displays a message that reports the device is installed, but may not work properly. Which of the following is the MOST likely cause of the message?（）A
The device needs a firmware updateB
The device needs an updated driver installedC
The plugged in device is too slow for the USB port speedD
The device is incompatible with the installed version of Windows
考题
单选题（） is used for sensing the temperature of the room in the air condition system.A
An expansion valveB
An evaporatorC
A thermostatD
A condenser
考题
单选题A solenoid valve used in a refrigeration system should be installed （）.A
with the axis of the solenoid horizontal, sensing temperature of the box, and upstream of the thermal expansion valveB
upright, sensing temperature of the box, and upstream of the thermal expansion valveC
upright, sensing temperature of the box, and downstream of the thermal expansion valveD
upright, sensing heat of the tail coil, and upstream of the thermal expansion valve
考题
单选题Which of the listed statements is a characteristic of the liquid charged power element used with thermostatic expansion valves?（）A
At the designed operating temperature, the liquid refrigerant charge has changed to a vaporB
The liquid refrigerant tends to collect at the bellows or diaphragm and reduces the valve sensitivityC
The sensing bulb is empty of liquid refrigerant charge at the designed operating temperatureD
The sensing bulb is never emptied of liquid refrigerant under normal operating conditions
考题
单选题The principal purpose of sub-cooling liquid refrigerant prior to its entering the expansion valve is to （）.A
increase the refrigerating effect, by decreasing the amount of flash gasB
allow the refrigerant to enter the throttling device in a saturated conditionC
increase the refrigerating effect by increasing the amount of flash gasD
minimize the temperature drop of the liquid as it passes through the solenoid valve to the outlet side
考题
单选题What monitoring device best indicates the load being carried by a diesel engine?（）A
Lube oil pressure gaugeB
Jacket water temperature gaugeC
TachometerD
Exhaust pyrometer
考题
单选题Network equipment supporting the use of flow control mechanisms has been recently installed. What is the purpose of flow control in a data network?（）A
It ensures that data is retransmitted if an acknowledgment is not received.B
It reassembles segments in the correct order on the destination device.C
It provides a mechanism for the receiver to control the transmission speed.D
It regulates the size of each datagram segment.E
All of the above are functions of flow control
考题
单选题Control valves of a CO2 system may be located within the protected space when（）.A
it is impractical to locate them outsideB
there is also a control valve outsideC
the CO2 cylinders are also in the spaceD
an automatic heat-sensing trip is installed
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