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单选题
If a large difference exists between the compressor discharge pressure and the pressure corresponding to the existing condensing temperature in a refrigeration system, you should（）.
A
increase the flow of the cooling water through the condenser
B
adjust the high pressure cutout to maintain the desired pressure
C
open the hot gas bypass temporarily to reduce capacity
D
purge non-condensable gases to reduce the excess pressure
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更多 “单选题If a large difference exists between the compressor discharge pressure and the pressure corresponding to the existing condensing temperature in a refrigeration system, you should（）.A increase the flow of the cooling water through the condenserB adjust the high pressure cutout to maintain the desired pressureC open the hot gas bypass temporarily to reduce capacityD purge non-condensable gases to reduce the excess pressure” 相关考题
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The maximum difference between mean time and apparent time is ______.A.equal to the longitude expressed in time unitsB.about 16 minutesC.the difference between the GHA of mean sun and the first point of AriesD.15°of arc
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Forces within a vessel have caused a difference between the starboard and port drafts. This difference is called ______.A.listB.heelC.trimD.Flotation
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What does the command show | compare rollback 1 display?（）A、the difference between the current candidate configuration and the candidate configuration from one commit agoB、the difference etween the current active configuration and the active configuration from the one commit agoC、the difference between the current active configuration and the active configuration from one commit agoD、the difference between the current candidate configuration and the archived configuration from one commit ago
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There is no difference between the environmental logistics and （）one.A、whiteB、redC、blueD、green
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There is no difference between the environmental logistics and （）one . A、whiteB、redC、blueD、green
考题
What does the command show | compare rollback 1 display?（）A、the difference between the current candidate configuration and the candidate configuration from one commit agoB、the difference between the current active configuration and the current candidate configurationC、the difference between the current active configuration and the active configuration from one commit agoD、the difference between the current candidate configuration and the archived configuration from one commit ago
考题
单选题What does the command show | compare rollback 1 display?（）A
the difference between the current candidate configuration and the candidate configuration from one commit agoB
the difference between the current active configuration and the current candidate configurationC
the difference between the current active configuration and the active configuration from one commit agoD
the difference between the current candidate configuration and the archived configuration from one commit ago
考题
单选题The maximum difference between mean time and apparent time is （）.A
equal to the longitude expressed in time unitsB
about 16 minutesC
the difference between the GHA of mean sun and the first point of AriesD
15°of arc
考题
单选题Which of the following definitions can be used to define the term ‘offset ’ as a characteristic of controller action?（）A
The period of time in which the set point and the control point coincideB
The periodic change between the set point and the control pointC
The variable difference between the set point and the control pointD
The constant difference between the set point and the control point
考题
单选题The clearance volume for a single stage compressor is defined as the space created between the （）.A
top of the piston and bottom side of head, with the piston at BDCB
piston and head, including the space around the piston to the top of the upper ring and under the valves, with the piston at TDCC
bottom of the piston and bottom side of the head at TDC, regardless of upper ring location and valve placementD
top of the piston and bottom side of the head at TDC as compared to that which exists between the top of the piston and bottom side of head at BDC
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单选题What could cause a significant difference between actual chain tension and the tension measured by the tensiometer? （）A
The type of anchor and mooring line being usedB
The type of bottom in which the ship is anchoredC
A significant difference between air and water temperatureD
The chain contacting a chock or fairlead between the tensiometer and the lower swivel fairlead
考题
单选题The power generated in the turbine must （） that required by the compressor.A
be less thanB
be larger thanC
be as large asD
not be so large as
考题
单选题If the capacity of the refrigeration compressor is too large, the saturation temperature will （）.A
riseB
fallC
be maintained constantD
None of the above
考题
单选题When there are cordial relations between the two countries, we mean there exists a ______ relationship between them.A
friendlyB
hostileC
fertileD
complicated
考题
单选题What does the command show | compare rollback 1 display?（）A
the difference between the current candidate configuration and the candidate configuration from one commit agoB
the difference etween the current active configuration and the active configuration from the one commit agoC
the difference between the current active configuration and the active configuration from one commit agoD
the difference between the current candidate configuration and the archived configuration from one commit ago
考题
单选题Forces within a vessel have caused a difference between the starboard and port drafts. This difference is called（）.A
listB
heelC
trimD
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单选题A wind has caused a difference between drafts starboard and port. This difference is（）.A
listB
heelC
trimD
flotation
考题
单选题Forces within a vessel have caused a difference between the starboard and port drafts,This difference is called（）.A
listsB
heelC
trimD
flotation
考题
单选题Magnetic compass deviation（）.A
varies depending upon the bearing usedB
is the angular difference between magnetic north and compass northC
is published on the compass rose on most nautical chartsD
is the angular difference between geographic and magnetic meridians
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