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二次冷却剂 secondary coolant
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_____ is used as coolant in light－water reactors.
A、GasB、Organic compoundC、Molten saltD、Water
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A customer has one IBM System Storage DS8700 in their main data center with one DS6800 at a secondary site. They are using the Global Copy feature between the sites. They want to bring up a test image at the secondary site using the primary site data.Which sequence of actions will properly bring up the secondary site?（）A. bring up the secondary site on the target disksB. suspend and bring up the secondary site on the target disksC. perform a FlashCopy and bring up the secondary site on the target disksD. go-to-sync, perform aFlashCopy, and bring up the secondary site on the target disks
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A customer has one IBM System Storage DS8700 in their main data center with one DS6800 at a secondary site. They are using the Global Copy feature between the sites. They want to bring up a test image at the secondary site using the primary site data. Which sequence of actions will properly bring up the secondary site?（）A、bring up the secondary site on the target disksB、suspend and bring up the secondary site on the target disksC、perform a FlashCopy and bring up the secondary site on the target disksD、"go-to-sync", perform aFlashCopy, and bring up the secondary site on the target disks
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SSR是（）的缩写。A、secondary surface radarB、secondary surveillance radioC、secondary surveillance radarD、surveillance secondary radar
考题
单选题Sea water is not used directly as a coolant because of （）.A
low specific heatB
high specific heatC
corrosive actionD
high viscosity
考题
单选题Due to （） action of pistons some relative motion between parts in contact in the coolant supply and return system must occur.A
reciprocatingB
rotatingC
runningD
removing
考题
单选题The customer brings their mini-tower and a new DVD/RW drive they want installed. The technician finds a second hard drive in an empty 5.25 bay connected to the secondary bus and jumpered as a slave. The ribbon cable will not stretch from the primary hard drive to the open 5.25 inch bay. Which of the following is the BEST solution?（）A
Connect the new DVD drive as the primary on the secondary bus and leave the old CD drive disconnected.B
Move the secondary hard drive next to the primary hard drive and connect to the primary bus. Connect the new DVD drive as the slave on the secondary bus.C
Move the secondary hard drive from the secondary to the primary bus and then reformat the hard drive after rebooting then reassign the drive letters in disk management prior to installing the new DVD drive on the secondary bus.D
Move the secondary hard drive to the bay and then connect it to the primary bus. Connect themini-tower and the new DVD drive as the master on the secondary bus.
考题
单选题Combustion knock occurring in a diesel engine can be caused by （）A
low coolant temperatureB
insufficient fuelC
high ambient temperatureD
carbon buildup on the injector tips
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单选题Engine coolant accumulating in the diesel engine lubricating oil can result from a （）A
low oil pressureB
high coolant pressureC
leaking fuel injectorD
cracked cylinder head or liner
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单选题Which of the following precautions must be taken if an electric immersion heater is used to keep the coolant in a diesel engine warm during the time the engine is secured?（）A
The coolant temperature must be maintained at 180℃B
The thermostatic bypass valves must be manually opened before the engine is startedC
The pressure cap must be removed while the engine is securedD
Electrical power to the heater must be secured before the cooling system is drained
考题
单选题Sea water is not directly used as a coolant for engines because of its （）.A
low specific heatB
corrosive actionC
high expenseD
acid property
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