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单选题
In a refrigeration plant the （） need defrosting.
A
fan
B
compressor
C
condenser
D
evaporator
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考题
Low compressor head pressure in a refrigeration system can be caused by ___.A.insufficient condenser cooling waterB.excessive condenser cooling waterC.air in the refrigeration systemD.excessive refrigerant in the system
考题
Questions 105-109 refer to the following e-mail.
To: Bertrand Fournier, Plant manager b_fournier@dawson.com
From: John Reynolds, Industrial production manager j_reynolds@dawson.com
Re: Valbonne, France plant
Date: January 13
Dear Mr. Fournier,
Thank you for your e-mail requesting that our engineers from London examine your chocolate productiori plant in Valbonne again next month. All of us at Dawson corporate headquarters appre-ciate your factory's desire to manufacture the finest chocolate, and we want to provide a supportteam to ensure that this is possible. Before we schedule a trip for Edith Singh and Barry Weinstein to visit your plant again. I have a few questions in regard to the production problems you men-tioned. First, I was wondering when the refrigeration unit was inspected last. Some Dawson plants in Geneva and Warsaw recently reported problems with their refrigeration systems, so I suggest that the temperature of the refrigerators during the cooling phase be checked. Second, do you think it is necessary for Ms. Singh and Mr. Weinstein to stay in Valbonne an entire week?
I believe their examination could be completed within two days.
Please let me know your views on these issues. I look forward to hearing from you.
Regards,John Reynolds
To: John Reynolds, Industrial production manager j_reynolds@dawson.com
From: Bertrand Fournier, Plant manager b_fournier@dawson.com
Re: Valbonne, France plant
Date: January 15
Dear Mr. Reynolds,
Thank you for your reply. In response to your questions, we have carefully examined all of our equipment and the entire production process, from the grinding of the cocoa beans to the pressing of the chocolate. The refrigerators are cooling the product at the appropriate temperature, but we are still producing chocolate that is too bitter. We believe the problem may be either in the grind-ing or roasting of the cocoa beans, but we need your engineers to verify our suspicion. As to the duration of the engineers' visit, you may be correct. They do not need to stay a week in Valbonne,but I would suggest they stay at least three days.
Please confirm the dates of February 12～14 for their trip.
Regards, Bertrand Fournier
Why is Mr. Reynolds writing to Mr. Fournier?A.To request that Mr. Fournier visit London
B.To clarify details of an upcoming trip
C.To accept a position at Mr. Fournier's company
D.To express dissatisfaction with a recent plant inspection
考题
What does Mr. Reynolds recommend that Mr. Fournier do?A.Order new ingredients
B.Talk to production managers
C.Check refrigeration equipment
D.Visit another plant
考题
A customer's plant maintenance manager invites a solution advisor to discuss Enterprise Asset Management in general and how it might help the maintenance group work more effectively and efficiently. What should the solution advisor do in the first meeting with the plant maintenance manager?（）A、Ask the plant maintenance manager about the company's history, competition, and market value.B、Ask the plant maintenance manager about their background, education, and professional experience.C、Ask the plant maintenance manager about current systems in use, issues with the system,and key areas where the manager wants to see improvements. D、Ask the plant maintenance manager about the number of employees, union representation, and how IBM Maximo Asset Management can represent employees and their skill sets.
考题
public class Plant { private String name； public Plant（String name） { this.name = name； } public String getName（） { return name； } } public class Tree extends Plant { public void growFruit（） { } public void dropLeaves（） { } } Which is true？（） A、 The code will compile without changes.B、 The code will compile if public Tree（） { Plant（）； } is added to the Tree class.C、 The code will compile if public Plant（） { Tree（）； } is added to the Plant class.D、 The code will compile if public Plant（） { this（”fern”）； } is added to the Plant class.E、 The code will compile if public Plant（） { Plant（”fern”）； } is added to the Plant class.
考题
单选题Low compressor head pressure in a refrigeration system can be caused by（）.A
insufficient condenser cooling waterB
excessive condenser cooling waterC
air in the refrigeration systemD
excessive refrigerant in the system
考题
单选题The evaporating pressure in R22 vapor compression refrigeration plant should be （） atmospheric.A
belowB
aboveC
equal toD
much larger than
考题
单选题The heat removed from the refrigerant in the condenser of a refrigeration plant is the （）A
latent heat of expansionB
sensible heat of condensationC
heat of compressionD
all of the above
考题
单选题The purpose of the passage is to _____.A
enlarge our knowledge of the plantsB
provide latest information on plant usageC
introduce a successful project concerning a plantD
emphasize the importance of rare plant preservation
考题
单选题In a compression refrigeration plant the refrigerant flows from the expansion valve and through the （） where it absorbs heat from the space being cooled and becomes a gas or vapor.A
compressorB
condenserC
throttle valveD
evaporator
考题
单选题Air that may enter a refrigeration plant tends to collect in the （）.A
upper part of the receiverB
upper part of the condenserC
down stream end of the cooling coilD
outlet end of the condenser
考题
单选题The function of （） in a refrigeration plant using Freon is to move moisture from all refrigeration system.A
filterB
filter drierC
heat exchangerD
air cooler
考题
单选题（）are supplied by main switchboard directly.A
Suez Canal searchlight, air compressor and air conditioning compressorB
Air compressor, boiler blower and refrigeration plantC
Boiler blower, Suez Canal searchlight and refrigeration plantD
Suez canal searchlight, air compressor and boiler blower
考题
单选题The refrigeration compressor in a water cooled refrigeration system is short cycling on the high pressure cutout switch， One reason for this could be the （）.A
system is low on refrigerantB
high pressure cutout switch is improperly adjustedC
discharge valves are leaking slightlyD
discharge valves are leaking excessively
考题
单选题Which cause of following will not lead to refrigeration plant short-cycle?（）A
lack of refrigerantB
refrigerant with much waterC
set defectively low pressure relayD
no cooling water
考题
单选题In a compression refrigeration plant the hot, high pressure refrigerant gas is cooled by the sea water and becomes liquid in the （）.A
compressorB
condenserC
throttle valveD
evaporator
考题
单选题Which of the following may cause that the compressor cuts off on high pressure cutout in a refrigeration plant? （） (1) faulty condensing (2) too few refrigerant (3) high discharge pressureA
any of (1) and (3)B
any of (1) and (2)C
any of (2) and (3)D
any of (1), (2) and (3)
考题
单选题Concerning the management of sewage treatment plant using activated sludge, which of the following is correct?（）A
the plant should be prohibited to supplying airB
the plant should work at intervalsC
the plant should be added disinfector in timeD
we should check strength of activated sludge, ivory-white color is best
考题
单选题public class Plant { private String name； public Plant（String name） { this.name = name； } public String getName（） { return name； } } public class Tree extends Plant { public void growFruit（） { } public void dropLeaves（） { } } Which is true？（）A
The code will compile without changes.B
The code will compile if public Tree（） { Plant（）； } is added to the Tree class.C
The code will compile if public Plant（） { Tree（）； } is added to the Plant class.D
The code will compile if public Plant（） { this（”fern”）； } is added to the Plant class.E
The code will compile if public Plant（） { Plant（”fern”）； } is added to the Plant class.
考题
单选题Which of the listed statements is correct concerning refrigeration systems?（）A
Dehydrators must be used continuously in a refrigeration systemB
A 25 ton refrigeration system has the same cooling effect as melting 25 tons of ice in 24 hoursC
A thermostatic expansion valve is used to control refrigerated space temperatureD
The liquid receiver functions to collect and remove non- condensable gases
考题
单选题Which of the following may cause that excessively warm water leaves the condenser in a refrigeration plant? （） (1) too little cooling water (2) too much cooling water (3) too warm cooler waterA
（1）onlyB
anyof（1），（2）and（3）C
anyof（1）and（3）D
anyof（1）and（2）
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