空调制冷技术单选题及答案

1,1.00,"下列哪个设备是用来清除制冷剂蒸汽和液体中的铁屑，铁锈等杂质 （ ）","储液器 ","气液分离器","过滤器","干燥器","3"
2,2.00,"对于绝热节流过程，下列说法错误的是（ ）","由于绝热节流过程有磨擦，因而工质的熵增加","由于流道截面突然变小，工质要克服局部阻力，因而压力下降","工质在进出口处的焓相等","由于过程绝热，所以温度不变","4"
3,3.00,"按化学结构分类，氟利昂制冷剂属于（ ）类.","无机化合物","饱和碳氢化物的衍生物","多元混合溶液","碳氢化合物","2"
4,4.00,"直通式浮球膨胀阀供给的液体是通过浮球室和（ ）部液体平衡管流入蒸发器。","上 ","下 ","中","前","2"
5,5.00,"气液分离器是分离来自（ ）出口的低压蒸气中的液滴.","冷却器 ","蒸发器","膨胀阀","储液器","2"
6,6.00,"将感温包安装在吸气管水平轴线以下（ ）度之间.","30","45","60","90","2"
7,7.00,"涡旋式制冷压缩机的特点是( )","效率低 ","振动小和噪声低","结构复杂","可靠性低","2"
8,8.00,"以下不属于辅助设备的是（ ）","气液分离器","储液器","过滤器","再冷却器","4"
9,9.00,"对高压液态制冷剂进行节流降压的目的（ ）","降低沸点","升高沸点","降低温度","增加温度","1"
10,10.00,"毛细管的供液能力与其几何尺寸有关，长度增加或内径减少，供液能力（ ）","减少 ","增大","不变 ","无法确定","1"
11,11.00,"壳管式冷凝器属于（ ）换热器","风冷式","混合式","回热式","间壁式","4"
12,12.00,"制冷机管路布置原则（ ）","氨管路可使用铜管","适当的间距便于安装保温层","配管可以直而长","管道穿墙不必设管套","2"
13,13.00,"氟里昂制冷系统应采用什么管（ ）","铜 ","铜合金 ","无缝管 ","钢","1"
14,14.00,"为了防止温度变化是因热膨胀阀造成危险，储液器的储存量不应超过本身容积的 （ ）","60﹪ ","70﹪","80﹪","90﹪","3"
15,15.00,"储液器安装在（ ）下面，储存高压液态制冷剂","冷却器 ","冷凝器 ","压缩机","膨胀阀","2"
16,16.00,"储液器必需布置于冷凝器的（ ）","上方 ","下方 ","左方 ","右方

","2"
17,17.00,"氨系统为防止液击，一般应使水平回气管有（ ）的坡度坡向蒸发器或氨气液分离器","0.1% —0.3%","0.3% —0.5%","0.5% —0.8% ","0.5% —1%","4"
18,18.00,"制冷剂从蒸发器里出来是（ ）状态，再进入压缩机","低温低压气体","低温高压气体","高温高压气体","高温低压气体","1"
19,19.00,"电冰箱冷凝器的传热方式为（ ）","导热","对流换热","辐射换热","复合换热","4"
20,20.00,"现在用于冰箱、冰柜和汽车空调系统的制冷剂为（ ）","氟利昂134a ","氟利昂22","氟利昂12 ","氟利昂123","1"
21,21.00,"常用的载冷剂是水，但只能用

于（ ）的条件","低于零摄氏度 ","等于零摄氏度 ","高于零摄氏度","低于100摄氏度","3"
22,22.00,"压缩比越大，相对余隙容积越大，余隙系数越（ ）","低","高","不变","不确定","1"
23,23.00,"蒸发温度不变，随冷凝温度的升高，单位容积制冷能力（ ）","减小 ","增大","不变","确定","1"
24,24.00,"蒸发式冷凝器耗水量很小，所需要空气流量不足风冷式冷凝器所需空气流量的（ ），因此特别适合干燥地区。","1/3","1/2","1/4","1/6","2"
25,25.00,"再冷却器安装在（ ）后面，作用是使冷凝后的液态制冷剂达到一定的再冷度。","蒸发器","冷凝器","压缩机","膨胀阀","2"
26,26.00,"有限溶于润滑油的制冷剂其在润滑油中的溶解度一般不超过（ ）","千分之一 ","万分之一 ","百分之一 ","十分之一 ","3"
27,27.00,"离心式制冷压缩机是靠（ ）作用，连续的将送入的气体压缩","离心力","外力 ","吸引力","内力 ","1"
28,28.00,"手动膨胀阀适用于（ ）","小制冷量","大制冷量","小流量","大流量","1"
29,29.00,"有传热温差的制冷系数为εc与逆卡诺循环的制冷系数ε之间的关系（ ）","εc > ε ","εc = ε","εc ≠ ε","εc <ε","4"
30,30.00,"氟利昂中不含( )时对金属没有腐蚀作用","H","F","Cl","水分","4"
31,31.00,"影响容积效率的主要因数是( ) ","节流系数 ","预热系数","余隙系数","气密系数","3"
32,32.00,"为了提高容积效率空调用全封闭密式氟利昂活塞式制冷压缩机多采用（ ）","长行程 ","短行程","全行程","半行程","2"
33,33.00,"强制对流式风冷冷凝器中通风机的作用是（ ）","强制紊流 ","强制层流","自然对流","强制对流","4"
34,34.00,"盐水溶液中盐的浓度低于盐水合晶点浓度时，凝固温度随浓度增加而（ ）","升高 ","降低","不确定 ","不变","2"
35,35.00,"劳仑兹循环的制冷系数取决于（ ）","被冷却物和冷却剂温度状况","制冷剂性质","压缩机性能","余隙系数","1"
36,36.00,"活塞式制冷压缩机型号表示中（例8AS-1.25）中""A""表示（ ）","汽缸类型","制冷剂种类 ","汽缸排列","功率代号","2"
37,37.00,"热泵的经济性表示方法为（ ）","制冷系数","供热系数","热负荷 ","制冷量","2"
38,38.00,"下列选项中哪个不是组成制冷机组的部件（ ）","压缩机","冷凝器 ","蒸发器","控制器","4"
39,39.00,"实际制冷理论循环和理想制冷循环相比，不具备以下哪种特点（ ）","用膨胀阀代替膨胀机","压缩在过热区进行而不是在湿蒸汽区进行","两个传热过程均为等压过程并且具有传热温差","具有较高的效率","4"
40,40.00,"制冷系统压缩机的排气管水平段应沿流动方向有（ ）的坡度","1/100","2/100","3/100","4/100","1"
41,41.00,"制冷剂的命名编号，假如该类别制冷剂编号为R***B*下

列哪种选项是正确的（ ）","第一位数字为m-1","第二位数字m+1","第三位数字x-1 ","第四位数字z+1

","1"
42,42.00,"回转式制冷压缩不包括下列哪项（ ）","滚动转子式","斜盘式","螺杆式","涡旋式","2"
43,43.00,"活塞式制冷压缩机制冷能力的控制可采用的方法中不包括（ ）","节流法 ","旁通法 ","加载法 ","调速法","3"
44,44.00,"冷凝器可归纳的分类，哪项是错误的（ ）","水冷 ","风冷","水-空气冷却 ","风-空气冷却","4"
45,45.00,"立式壳管冷凝器的优点不包括（ ）","占地面小 ","冷却水用量较小","无冻结危险 ","冷却水自上而下直通流动","2"
46,46.00,"因制冷系统一般均采用水或空气作为冷却介质使制冷剂冷凝成液态，故希望常温下制冷剂的压力也不应过高，最好不超过（ ）兆帕","1","2","3","4","2"
47,47.00,"常用的载冷剂当低于零摄氏度时，不可采用（ ）","盐水","水 ","氯化物","乙二醇","2"
48,48.00,"压缩机和驱动电动机封闭在同一空间是描述（ ）压缩机","封闭式","开启式","顺流式 ","逆流式","1"
49,49.00,"不属于管内沸腾换热的是（ ）","水箱式蒸发器 ","冷却液体干式蒸发器","满液式卧式壳管式蒸发器","直接蒸发式空气冷却器","3"
50,50.00,"液体气化过程要吸收气化潜热，而且液体压力不同，其饱和温度也不同，压力越低，饱和温度（ ）","越低 ","越高 ","相同 ","不定","1"
51,51.00,"对于CHF2CL的命名编号正确是（ ）","R22","R123 ","R318","R290","1"
52,52.00,"多用于制冷机组的制冷压缩机为（ ）","离心式","螺杆式","活塞式","涡旋式","2"
53,53.00,"下列哪种蒸发器消除了温差引起单热应力（ ）","卧式壳管蒸发器","水箱式","U型管式干式壳管","直接蒸发式空气冷却器","3"
54,54.00,"理想制冷循环重要条件之一是制冷剂与冷源和热源之间必须在（ ）条件下进行可逆换热过程","无温差","无压差","无质量差","其他","1"
55,55.00,"流经回热器的液态制冷剂与气态制冷剂的（ ）相等","温度","体积 ","压强","质量流量","4"
56,56.00,"二元混合溶液，其自由度为（ ）","一","二","三","四","2"
57,57.00,"下列哪项不是影响离心式制冷压缩机制冷量的因素（ ）","蒸发温度","冷凝温度 ","转数 ","节流系数","4"
58,58.00,"螺杆式制冷压缩机其容量为（ ）","5KW以下","100-1200KW ","4-40KW","1200KW以上

","2"
59,59.00,"空气调节用制冷装置不使用（ ）","风冷","水冷 ","制冷剂或其他介质进行的冷却","水-空气冷却","3"
60,60.00,"中间冷却器用于（ ）级压缩制冷装置","一","二","三","四","2"
61,61.00,"蒸发器中发生（ ）过程","等压吸热","等压放热","绝热压缩 ","绝热膨胀","1"
62,62.00,"冷凝器中发生（ ）过程","等压吸热","等压放热","

绝热压缩","绝热膨胀","2"
63,63.00,"毛细管是根据( )的原理工作的","液体比气体更容易通过","制冷剂节流","提高制冷量","方便两厢转化

","1"
64,64.00,"氟利昂做制冷剂易发生（ ）现象，因此系统中装有干燥器.","水锤","镀铜 ","腐蚀","冰塞","4"
65,65.00,"使用活塞式压缩机是压缩比不应大于（ ）","8","5","7","6","1"
66,66.00,"中间冷却器的制冷剂来自于（ ）","蒸发器","压缩机","膨胀阀","冷凝器","3"
67,67.00,"根据压缩机构造不同，可分为（ ）","开启式和封闭式","顺流式和逆流式","卧式与立式","单螺杆和双螺杆式

","1"
68,68.00,"氨制冷系统安装时，若冷凝器与贮液器之间无均压管，则要保证其两者之间的高度差应不小于（ ）m","0.2","0.3","0.4","0.5","2"
69,69.00,"下列哪个不属于离心式制冷压缩机的优点（ ）","制冷能力大","质量大 ","没有磨损部件","运行稳定","2"
70,70.00,"下列哪个不是立式壳管冷凝器的优点：（ ）","占地面积小","可安装在室外","便于清洗铁锈和污垢","对水质要求高","4"
71,71.00,"工质吸热或放热，其温度不变，只能集态变化，这种传递的热量称为（ ）","吸热","放热","显热","潜热","4"
72,72.00,"氟锂昂系统为保证回油顺畅，水平回气管应坡向压缩机，坡度应不小于（ ）","1/100","2/100 ","3/100 ","4/100","2"
73,73.00,"氯化钠水溶液最大的缺点（ ）","腐蚀性","密度大 ","密度小","相容性好","1"
74,74.00,"一般只有当压缩比大于（ ）时采用两级压缩。","10","9","8","7","3"
75,75.00,"热泵的供热量永远（ ）所消耗的功量。","小于 ","等于 ","大于","小于、大于均可","3"
76,76.00,"根据沸点高低，可将制冷剂分为三种，沸点低于-60摄氏度的为（ ） ","高温制冷剂 ","中温制冷剂","低温制冷剂","超低温制冷剂","3"
77,77.00,"以盐水溶液作为载冷剂对金属腐蚀的原因（ ）","浓度高 ","化学性质不稳定","导热系数高","含氧高

","4"
78,78.00,"制冷设备布置应使管路尽量短，另外还有一定的管径要求，目的是减少（ ）","压力","重力","动力","阻力","4"
79,79.00,"对于满液式卧式壳管蒸发器的大空间沸腾换热应（ ）","肋管外大于光管","管束外大于光管","肋管外小于光管","管束外小于光管","1"
80,80.00,"单机制冷量最高的压缩机是（ ）","容积式压缩机 ","活塞式压缩机 ","离心式压缩机","涡旋式压缩机","3"
81,81.00,"下列不属于溴化锂的特性是（ ）","无色粒状结晶体","无毒 ","易发挥","对皮肤无刺激性","3"
82,82.00,"冷凝温度比冷凝器内冷却水出口温度高（ ）摄氏度","3～5","2～5","3～7","2～3","1"
83,83.00,"能量传递的动力是（ ）","温度差","压力差","比焓差","密度差","3"
84,84.00,"溶液吸收剂与制

冷-吸收剂溶液的区别是哪个量（ ）","制冷剂浓度低","制冷量","耗能量","制冷系数","1"
85,85.00,"溴化锂吸收式制冷机的制冷剂是（ ）","水","溴化锂","溴化锂水溶液 ","氨","1"
86,86.00,"溴化锂水溶液的浓度___或温度___是均易于形成结晶（ ）","过高 过高","过高 过低","过低 过高","过低 过低","2"
87,87.00,"发生器内溶液温度比热媒温度（ ）","低20～50摄氏度","高20～50摄氏度","低10～40摄氏度","高10～40摄氏度","3"
88,88.00,"在制冷系统中起稳定制冷剂流量的是（ ）","气液分离器 ","储液器","过滤器","干燥器","2"
89,89.00,"溴化锂与水混合,以及水与氨混合时会放热，混合热为（ ）","正值","负值 ","0","都不对","2"
90,90.00,"现有a b 两溶液，a溶液容积为V1, b溶液容积为V2 ，ab 两溶液混合后的总容积为（ ）","V= V1","V= V2 ","V= V1+ V2","V≠V1+ V2","4"
91,91.00,"造成活塞式制冷压缩机实际排气量降低的主要因素是（ ）","节流系数","余隙系数","预热系数","气密系数","2"
92,92.00,"氨压缩机的吸气管应有不少于（ ）的坡度。","0.01","0.05","0.001","0.005","4"
93,93.00,"下列哪一项属于对制冷剂的热力学性质的基本要求（ ）","与润滑油的互溶性","相溶性好","压力适中","密度粘度好","3"
94,94.00,"下列水冷式冷凝器中，对水质要求较低的是（ ）","卧式壳管式冷凝器","套管式冷凝器","立式壳管式冷凝器","焊接板式冷凝器","3"
95,95.00,"气密系数 的取值范围是（ ）","0.98～1.00","0.92～0.95","0.95～0.98","0.90～0.92","3"
96,96.00,"为了节约深井水的用量，减少打井的初投资，而又不降低冷凝器的传热效果，常用（ ）","直流式冷却水系统","混合式冷却水系统","循环式冷却水系统","蝴蝶工制冷系统


","2"
97,97.00,"有传热温差的致冷系数（ ）逆卡诺循环的致冷系数。","低于","等于","高于","不确定","1"
98,98.00,"氨制冷系统的吸气管路和排气管路的压力损失不宜超过相当于（ ）","蒸发温度降低1℃或冷凝温度升高1℃","蒸发温度升高1℃或冷凝温度降低1℃","蒸发温度降低0.5℃或冷凝温度升高0.5℃","蒸发温度升高0.5℃或冷凝温度降低0.5℃","3"
99,99.00,"在逆卡诺循环中，被冷却物温度的变化比冷却剂温度的变化对制冷系数的影响（ ）","要大 ","要小 ","相等","不确定","1"
100,100.00,"甲烷族卤化物制冷剂的表示为：（ ）","R1XX","R2XX","R0XX ","R3XX","3"
101,101.00,"两级压缩系统组成的复叠式制冷循环可获得（ ）°C的蒸发温度","-70 — -90","-75 — -110","-120 — -150","-150 — -170","2"
102,102.00,"从膨胀阀里出来的是（ ）","高压液体","高压气体","低压液体","低压气体","3"
103,103.00,"R22是哪种制冷剂（ ）","甲烷 ","乙烷 ","丙

烷","氟利昂

","4"
104,104.00,"活塞式制冷压缩机多为中小型，一般空调工况制冷量小于（ ）","300KW ","400KW ","500KW ","600KW ","1"
105,105.00,"无毒、臭、污染,无腐蚀,破坏臭氧层潜能值ODP=0，温室效应潜能值WGP=1的制冷剂是（ ）","甲烷 ","氟利昂","氨 ","CO2 ","4"
106,106.00,"C4H4F2Cl1Br3理论上可用制冷剂编号为（ ）","R352 ","R342 ","R442 ","R452 ","1"
107,107.00,"常用R717,R22制冷剂属于（ ）","高温制冷剂","中温制冷剂","低温制冷剂 ","中低温制冷剂","2"
108,108.00,"下列制冷剂分子式与编号对应不正确的一项是（ ）","CHF2Cl R22 ","C3H8 R290 ","C4F8 R318","CHCl2CF3 R132

","4"
109,109.00,"两个单级压缩系统组成的复叠式制冷循环可获得（ ）°C的蒸发温度","-70 — -90","-75 — -110 ","-120 — -150","-150 —-170","1"
110,110.00,"二氯三氟乙烷CHCL2CF3的命名为( )","R223 ","R213 ","R123 ","R113","3"
111,111.00,"要获取-70°C以下的低温，一般采用（ ）制冷系统","单级压缩","两级压缩","三级压缩","复叠式","4"
112,112.00,"卡诺循环是在两个不同( ) 热源之间进行的理论热力循环","定温","定压 ","定焓","定湿","1"
113,113.00,"家用电冰箱多用什么样的制冷压缩机( )","半封闭式","全封闭式","转子式","离心式","2"
114,114.00,"壳管式冷凝器属于下列哪一种冷凝器( )","水冷 ","风冷","水-空气冷却","其他","1"
115,115.00,"下列哪一种不属于蒸发器种类的是( )","满液式","循环式","淋激式","接触式","4"
116,116.00,"一般只有压缩比PK/PO（ ）时，采用两级压缩","大于8时","小于7时","大于6时","小于5时","1"
117,117.00,"氨有刺激性，对人体有害，目前规定在空气中的浓度不超过( )","20 mg/m3","18 mg/m3","17 mg/m3","19 mg/m3

","1"
118,118.00,"制冷的目的在（ ）中完成","压缩机 ","冷凝器","蒸发器","膨胀阀","3"
119,119.00,"从膨胀阀中出来的是( )","高压液体","高压气体","低压液体","低压气体","3"
120,120.00,"工质流经冷凝器冷凝（ ）","放出热量，且放热量等于其焓值的减小","放出热量，焓值增加","吸收外界热量，焓值增加","由于冷凝过程中压力不变，所以焓值不变","1"
121,121.00,"单级活塞式制冷压缩机多为中小型，一般空调工况制冷量为( )","小于100KW","小于200KW ","小于300KW","小于400KW","3"
122,122.00,"采用两级压缩制冷系统是为了( )","制取更低的温度","减少压缩机功耗","提高制冷系数","降低制冷设备成本","1"
123,123.00,"减速型电动或电子膨胀阀通过( )进行工作","减速器","减速齿轮 ","脉冲电压 ","气流调节器","2"
124,124.00,"按平衡分成的不同，热力膨胀阀可分为( )","前平衡式和后平衡式","内平衡式和外平衡式","上平衡式和下平衡式","节能平衡式和环保平衡

式","2"
125,125.00,"单级氟锂昂压缩机最大压缩比应不超过（ ）","5","6","8","10","4"
126,126.00,"组成制冷系统中起减压作用的是( )","压缩机","冷凝器","节流阀","蒸发器","3"
127,127.00,"无级变容量制冷系统中制冷剂供液量调节范围宽,调节反应快,要求使用节流机构是( )","热力膨胀阀","手动膨胀阀","电子膨胀阀","毛细管","3"
128,128.00,"下列哪种不属于冷却水系统( )","直流式","混合式 ","循环式","间接式","4"
129,129.00,"单级氨压缩机最大压缩比应不超过（ ）","5","6","8","10","3"
130,130.00,"在制冷剂为（ ）的氟锂昂系统中，一般不采用回热循环
","R12","R502","R113","R22","4"
131,131.00,"对毛细管的供液能力影响较小的参数是( )","制冷剂压力PK","制冷剂温度T ","毛细管内径DI及长度L ","蒸发压力PO","4"
132,132.00,"节流机构有多种形式，家用电冰箱适宜采用（ ）

","毛细管","热力膨胀阀","热电膨胀阀","浮球阀","1"
133,133.00,"供热循环的供热系数是指（ ）","从低温热源吸收的热量与循环外功的比值","向高温热源放出的热量与循环外功的比值","从低温热源吸收的热量与向高温热源放出的热量的比值","比相同热源下制冷循环的制冷系数少数1","2"
134,134.00,"节流机构有多种形式，氨制冷系统适宜采用（ ）
","毛细管 ","B． 热力膨胀阀","热电膨胀阀","浮球阀","4"
135,135.00,"按驱动方式的不同，电子膨胀阀可以分为( )","电磁式与直动式","电磁式与减速式","电动式和直动式","电动式与电磁式

","4"
136,136.00,"节流机构有多种形式，单元式空调机适宜采用（ ）","毛细管","热力膨胀阀","热电膨胀阀","浮球阀","2"
137,137.00,"制冷设备工作时,随热负荷的变化,蒸发器的供液量应该是( )","热负荷增大供液量增加","热负荷减小供液量增加","热负荷增大供液量减小","热负荷减小供液量不变","1"
138,138.00,"膨胀阀的开启度与蒸发温度的关系是( )","蒸发温度高开启度大","蒸发温度高开启度小","蒸发温度低开启度大","开启度调定后不变","1"
139,139.00,"毛细管通常采用管径为（ ）mm的纯铜制作.","0.3 - 0.5","0.5 - 2.5 ","2.5 - 5 ","3 - 6","2"
140,140.00,"内平衡式膨胀阀的膜片上作用着感温工质压力pg、蒸发压力p0和弹簧当量压力pw,当三力失去平衡，pg〈p0+pw时，阀的供液量将（ ）","增大","减小","不变","说不清","2"
141,141.00,"冷却水冷却冷凝器中的制冷剂时，冷凝压力（ ）","减小","增大","不变","为0","3"
142,142.00,"制冷剂在冷凝器内是（ ）状态.","过冷","过热","饱和","未饱和","3"
143,143.00,"大型空调工程或低温制冷工程应采用（ ）压缩机.","活塞式","螺杆式","涡旋式","离心式","4"
144,144.00,"螺杆式压缩机工作过程的

特点是（ ）","工作转速低，运转平稳","工作转速高，运转振动大","工作过程连续，无脉冲现象","存在余隙容积，容积效率较低","3"
145,145.00,"活塞环中油环的作用是（ ）","吸油","刮油","液压油","密封","2"
146,146.00,"通常是用（ ）来反映制冷压缩机的工作过程","p-h图","p-v图","T-s图","T-v图","2"
147,147.00,"制冷压缩机的主要作用是对制冷蒸气进行（ ）","吸气","排气","压缩","作功","4"
148,148.00,"（ ）制冷压缩机为速度型压缩机.","活塞式","涡旋式","螺杆式","离心式","4"
149,149.00,"压缩机的实际工作循环经过四个过程，它们依次为（ ）","吸气--排气--膨胀--压缩","吸气--膨胀--排气--压缩","吸气--压缩--膨胀--排气","吸气--压缩--排气--膨胀","4"
150,150.00,"由压缩机排出的制冷剂蒸气称之为（ ）","饱和蒸气","干饱和蒸气","过热蒸气","过冷蒸气","3"
151,151.00,"一定质量某种理想气体，若压力不变，则其体积增加时（ ）","温度升高","温度降低","温度不变","温度与体积无任何关系","1"
152,152.00,"蒸发器中制冷剂蒸发时干度x的变化为（ ）","由x=0增大至x=1","x=0不变","由x=1减小至x=0","x=1不变","1"
153,153.00,"二元溶液的定压汽化过程是一种（ ）","降温过程","升温过程","定温过程","温度多变过程","2"
154,154.00,"理想制冷循环就是（ ）","可逆循环","不可逆循环","卡诺循环","逆卡诺循环","4"
155,155.00,"工质对溶液在（ ）中加热，沸点低的物质将从溶液中汽化分离出来.","吸收器","发生器","高温热交换器","低温热交换器","2"
156,156.00,"蒸发器中制冷剂是在（ ）下吸收汽化的.","等温等压","等温不等压","等压不等温","不等温不等压","1"
157,157.00,"吸收式制冷，加热时能使工质对溶液（ ）","溶解","组合","分组","升温","3"
158,158.00,"溴化锂吸收式制冷机中，溴化锂溶液吸收水蒸气时会（ ）","吸收热量","放出热量","既不吸热也不放热","将热量转化为潜热","2"
159,159.00,"蒸气压缩式制冷的实际循环和理想循环的最大区别是（ ）","压缩过程","冷凝过程","节流过程","蒸发过程","1"
160,160.00,"蒸气压缩式理想制冷循环的制冷系数跟（ ）有关.","制冷剂","蒸发温度","冷凝温度","蒸发温度和冷凝温度","4"
161,161.00,"空调中的蒸发器属于（ ）换热器.","壳管式","套管式","肋片管式","板式","3"
162,162.00,"蒸气压缩式制冷系统，当冷凝温度升高时，（ ）将增加","制冷量","压缩机功耗","吸气质量体积","制冷剂的循环量","2"
163,163.00,"溴化锂溶液对金属具有腐蚀作用，并生成（ ）","氧气","空气","二氧化碳","氢气","4"
164,164.00,"对大气臭氧层没有破坏作用的制冷剂是（ ）","R12","R22","R717","R502","3"
165,

165.00,"R134a制冷剂属于氟利昂制冷剂中的（ ）类.","CFC","HCFC","HFC","HC","3"
166,166.00,"吸收剂是吸收蒸发器内的（ ）制冷剂.","饱和液体","未饱和液体","液体","汽化的气体","4"
167,167.00,"下列制冷剂中，（ ）属于非共沸溶液.","R134a","R290","R407C","R502","3"
168,168.00,"空调系统中最好的载冷剂是（ ）","空气","水","盐水","有机化合物","2"
169,169.00,"低压储液器的存液量应不少于（ ）","液泵小时循环量的30%","筒体体积的30%","液泵小时循环量的20%","筒体体积的20%","1"
170,170.00,"单效溴化锂吸收式制冷机其蒸发器和吸收器必须采用（ ）换热设备。","沉浸式","喷淋式","套管式","间壁式","2"
171,171.00,"制冷机房内制冷机组与墙壁之间以及与上方管道或电缆桥的净距离应不小于（ ）","1m","1.2m","1.5m","2m","1"
172,172.00,"制冷机房内，水泵之间通道不小于（ ）m.","0.5","0.6","0.7","0.8","3"