海船船员考试

单选题With ducted air conditioning systems, the modern tendency is to use（）A central air conditioning systemB high velocity systemC low velocity systemD single duct system

题目
单选题
With ducted air conditioning systems, the modern tendency is to use（）
A

central air conditioning system

B

high velocity system

C

low velocity system

D

single duct system

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相似问题和答案

第1题：

In an air conditioning system, moisture is removed from the air by ______.

A.filters

B.separators

C.ducted traps

D.dehumidifiers


正确答案：D

第2题：

According to the passage, what is one disadvantage of skyscrapers that have mirroredwalls?__________

A.The exterior surrounding air is heated
B.The building materials are very expensive
C.Construction time is increased
D.Extra air-conditioning equipment is needed

答案：A
解析：
细节理解题。文章的第三段最后一句谈到了这一点：“However，mirror-walled skyscrapersraise the temperature of the surrounding air and affect neighboring buildings．”即The exterior surrounding air isheated．(摩天大楼周围外表空气升高了。)

第3题：

Which of the processes listed would be the most satisfactory method to use to lower the humidity of the air being circulated by an air conditioning system?

A.Cooling the air to a temperature just above dew point

B.Heating the air to a point at which moisture will boil off ,then re-cooling it

C.Cooling the air to a point below dew point, then reheating it

D.Heating the air and then cooling it to a point below dew point


正确答案：C

第4题：

单选题
If plastic film insulation becomes damaged in air conditioning system, （） may form within the film.
A

evaporation

B

condensation

C

liquefies

D

vaporization


正确答案： D
解析： 暂无解析

第5题：

Would you like the air-conditioning on?的意思是：（）？


正确答案:您需要打开空调吗

第6题：

According to this passage, which of the following statements is true?

A.In boiler and machinery spaces, there is the air conditioning.

B.In the boiler rooms the requirement of air volume should meet 25-50% of combustion requirement.

C.To maintain the comfort zone in the separate control room the air conditioning plant should be fitted.

D.The comfort conditions can be maintained in the engine room all the time.


正确答案：C

第7题：

Heating，ventilating，and air conditioning（HVAC） systems are______in most of underground subway stations to provide comfortable and fresh air to underground subway stations。

A.assembled
B.installing
C.equipped
D.installed

答案：D
解析：
本题考查动词的词义辨析。题目意为“大多数地下地铁车站都安装了供暖、通风和空调系统，为地下地铁车站提供舒适和新鲜的空气。”A选项“装配，集合”，B选项“安装”，C选项“装备”， D选项“（被）安装”。由于主语是物，和动词“安装”之间构成被动关系，因此要选择“（被）安装”。
　　

第8题：

Ventilation ().

A、is a system for moving fresh air

B、can cut indoor pollution to a safe level

C、can cause some diseases

D、is better done through air-conditioning


参考答案：AB

第9题：

单选题
Due to the large amount of heat picked up by the air in boiler and engine rooms, it would be （） to maintain ambient conditions within the comfort zone by air conditioning.
A

possible

B

necessary

C

practicable

D

impracticable


正确答案： C
解析： 暂无解析

第10题：

单选题
Sludge may form in the crankcase of an air conditioning compressor as a result of （）.
A

bubbling refrigerant

B

overheating and oxidation

C

lowered operating temperatures

D

reducing the cloud or flash point


正确答案： A
解析： 暂无解析

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