一般常见家用热泵式空调器(冷暖机),冬天正常制热时,其高压压力较夏天正常制冷之高压压

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问题:

一般常见家用热泵式空调器(冷暖机),冬天正常制热时,其高压压力较夏天正常制冷之高压压力如何()

A.相等

B.较高

C.较低

D.无对应关系

考点:制冷工考试制冷原理与制冷系统制冷原理与制冷系统题库
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完形填空。
     Mental health is about the way you think and feel and your ability to deal with ups and downs. Even though
you are mentally healthy, it doesn't   1   that you don't have a mental health problem.
     Mental health is everyone's business. We all have times when we feel down or   2  . Most of the time those
feelings pass,   3   sometimes they develop into a more serious problem. It seems that our mental health doesn't
always stay the same. It can change as the environment changes and as you move   4   different stages (阶段)
of your life.
     Here are four practical   5   to look after your mental health. Making simple changes to how you live doesn't
cost much or take up lots of time. Anyone can   6   them.
     ●Talk about your feelings. It can help you stay in good mental health. It isn't a sign of   7  , but part of your
ability to do what you can to stay healthy.
     ●Eat well. What you eat and how you feel are   8   connected. A proper diet can have a good effect on your
mental health.
     ●Keep in touch. Friends and family members can offer   9   suggestions which may help you keep active and
solve practical problems.
     ●Take a break. It could be a weekend  10  new places to enjoy the nature, or even a ten-minute break from
doing your homework. A few minutes can be enough to relax you.
( )1. A. agree     
( )2. A. excited   
( )3. A. but       
( )4. A. away      
( )5. A. answers   
( )6. A. follow    
( )7. A. weakness  
( )8. A. easily    
( )9. A. difficult 
( )10. A. protecting
B. mean        
B. satisfied   
B. and       
B. inside        
B. replies     
B. find          
B. laziness       
B. closely       
B. terrible    
B. exploring 
C. doubt          
C. surprised   
C. so          
C. through        
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C. advise         
C. happiness      
C. equally        
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D. notice            
D. stressed        
D. as               
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D. chances    
D. count              
D. richness            
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D. imagining  
题型:单项选择题

Jenny is always absent from school, ______ I suppose is why she is criticized now and then.

A.which

B.who

C.that

D.what

题型:单项选择题

患儿女,6个月,因“发热伴频繁咳嗽,喘憋5d”来诊。查体:T38.4℃,R60次/min;嗜睡,面色发灰;HR180次/min,心音低钝;肝肋下3cm。胸部X线片:双肺可见大小不等的片状阴影。

应用洋地黄制剂之前检查心率,小于一定数值时应该报告医师并停用,这个数值是()。

A.60次/min

B.70次/min

C.80次/min

D.90次/min

E.100次/min

F.110次/min

题型:单项选择题

阅读下列材料,回答问题。

材料一:从世界历史的观点看,美国革命之所以重要,并不是因为它创造了一个独立的国家,而是因为它创造了一个新的、不同类型的国家。——摘自斯塔夫里阿诺斯《世界通史》

材料二:美国革命是反对英国的“奴役压迫”的革命。在这个革命中,南方一些奴隶主感到奴隶制度与自由平等的原则格格不入,因而多方寻求废除奴隶制而又不致造成自己的经济破产的道路。但是他们终于没有找到这样一条两全其美的道路。——摘自吴于廑、齐世荣《世界史》

回答:

(1)材料一中“新的、不同类型的国家”指的是什么?运用所学知识指出哪一文献为它的确立提供了法律保障?

________________________________________________________________________________

(2)结合材料二和所学知识,运用一分为二的观点评价美国独立战争。

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题型:单项选择题

已知一块钢板的公称尺寸为10mm*2000mm*10000mm,过磅后得到的重量为1540kg,请计算这块钢板的重量偏差。(钢板比重按7.85t/m3,精确到小数点2位)。

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