To add refrigerant to the high side of an air conditioning system, you should introduce the refrigerant through the （）.

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• To correct the condition of slugging and flooding back in a refrigeration system, it may be necessary to （）.

  A . re-adjust the discharge pressure B . clean the expansion valve screen C . add refrigerant D . adjust the expansion valve

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• The sensing line for the low pressure cutout switch to a refrigeration system is located （）.

  A . in the chill box B . before the receiver C . on the suction side of the compressor D . on the discharge side of the compressor

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• You create a Web site. You add an EditorZone control to the home page on the Web site. You need to enable users to customize the size and location of the Web Parts on their home pages. Which two controls should you add to the EditorZone control?（）

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• The purpose of the purge valve at the top of the condenser in a refrigerating system is to（）

  A . remove any air that may accumulate in the system B . take out unpleasant fumes from the refrigerant C . vent off excess refrigerant in an emergency D . permit opening the refrigerating system for cleaning and inspecting

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• You are evaluating whether to add an iSCSI target in the main office to add storage to the file servers.   Which technical requirement cannot be met when using an iSCSI target？（）

  A . Ensure that the data on the file servers is protected by using BitLocker. B . Ensure that the file servers can access additional storage as a local drive. C . Ensure that new storage solutions are supported by Windows Failover Clustering. D . Ensure that storage can be provisioned without causing any downtime of the file servers.

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• In a refrigeration system, if the cooling water to the condenser fails, the（）.

  A . box temperature solenoid valve will close B . expansion valve will close C . compressor will shutdown D . king valve will ope

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• To add refrigerant to the low side of an air conditioning system, the refrigerant should be introduced through the （）

  A . suction service valve as a vapor B . suction service valve as a liquid C . discharge service valve as a vapor D . charging valve as a liquid

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• The compressor suction line conveys the refrigerant vapor from （） to （）.

  A . condenser；evaporator B . evaporator；compressor C . compressor；condenser D . None of the above

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• In terms of pressure and temperature in the refrigerant in the compressor, what happens to the primary?（）

  A . its pressure and temperature are both lowered B . its pressure and temperature are both raised C . its pressure is lowered and its temperature is raised D . its pressure is raised and its temperature is lowered

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• Personnel working with refrigeration systems, and subject to the exposure of refrigerants should wear （）.

  A . face shield B . a respirator C . rubber gloves D . an all purpose gas mask

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• If the refrigeration compressor crankcase is sweating, the cause may be due to （）.

  A . a shortage of refrigerant B . the compressor running continuously C . liquid refrigerant returning to the compressor D . the compressor short cycling on the high pressure cutout

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• What command will allow the operator to add the current working directory to the command search path?（）

  A . export PATH=pwd B . export PATH=$PWD C . export PATH=$PATH:pwd D . export PATH=$PATH:$PWD

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• The certificate for the refrigerating plant will（）soonI’d like to extend its validation now.

  A . update B . finish C . outdated D . expire

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• You are creating a sales data template and need to add a picture to the margin. What is the best way to add this margin?（）

  A . Choose the margin code in the object navigator and select file->import->image.  B . Choose the margin node in the object navigator and use the tool bar button.  C . Click the margin button in the layout model and select file->import->image.  D . Click the margin button in the layout model and use the tool bar button.

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• When the relief valve opens it discharges high pressure refrigerant vapor to the （）.

  A . liquid strainer B . refrigerant inlet of the condenser C . inlet side of the evaporator D . suction side of the compressor

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• Which of the listed operations will cause an automatically controlled refrigeration compressor to restart?（）

  A . Closing of the solenoid valve B . Closing of the expansion valve C . An increase in the suction pressure D . Decreasing the suction pressure

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• Vertical structural members attached to the floors that add strength to the floors are called（）.

  A . boss plates B . buckler plates C . stiffeners D . breast hook

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• The function of （） in a refrigeration plant using Freon is to move moisture from all refrigeration system.

  A . filter B . filter drier C . heat exchanger D . air cooler

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• The purpose of the refrigeration system low pressure cutout switch is to （）

  A . protect the compressor from liquid flood back B . protect the compressor from low discharge pressure C . start and stop the compressor upon system demand D . start the compressor after a drop in the evaporator pressure

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• P.S. is always used to add a personal touch to the typewritten letter.

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• Referring to the exhibit, which command would you use to add an additional address to the ge-0/0/9 unit 0 interface？（）

  <img src='https://img2.soutiyun.com/shangxueba/ask/17124001-17127000/17126130/8d1b0ad62b4fb18bb984b0a4dcbe0ff7.jpg' /> A. [edit interfaces ge-0/0/9 unit 0] user@router set family inet address 192.168.100.1/24 B. [edit interfaces ge-0/0/9 unit 0] user@router set family inet secondary-address 192.168.100.1/24 secondary C. [edit interfaces ge-0/0/9 unit 0] user@router set family inet address 192.168.100.1/24 secondary D. [edit interfaces ge-0/0/9 unit 0] user@router set family inet address-secondary 192.168.100.1/24

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• In a leap year,the extra day _____ the second month, giving it 29 instead of the usual 28 days. [ ] A. adds up B.is added to C. is added up to D. adds to

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• In the following options, which keyword is used to add records to the table （）

  A．ALTER B．CREATE C．UPDATE D．INSERT

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