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【单选题】
(1) My chemistry course is very difficult and time-consuming. The professor doesn't seem to realize that chemistry isn't the only course we are taking. He gives lots of homework and too much reading. The worst thing is that his lectures are really boring. I'm not interested in chemistry, so I hate reading the textbook. I know I'm not the only student complaining about this course. (2) My chemistry course is very difficult and time-consuming. First of all, we're responsible for two labs every week, which means a minimum of ten hours a week in the lab. To make matters worse, the professor gives at least three tests per month. The questions are very tricky, and we have to memorize long, complicated formulas. Finally, the reading load is also quite heavy---as much as twenty-five pages a night. I often spend all my free time doing the required reading.
A.
Paragraph 1
B.
Paragraph 2
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【单选题】房水最主要的排出途径是
A.
虹膜
B.
视网膜
C.
角膜
D.
房角小梁网
【判断题】制冷循环属于逆向循环,热泵循环属于正向循环。
A.
正确
B.
错误
【单选题】逆向卡诺循环可以进行制冷和供热,相应的制冷系数和供热系数表述正确的是( )
A.
逆向卡诺循环具有最大的制冷系数和供热系数
B.
所有供热循环供热系数和逆向卡诺循环供热系数一样
C.
所有制冷循环的制冷系数和逆向卡诺循环制冷系数一样
D.
制冷系数和供热系数一定都大于1
【简答题】卡诺循环的热效率η t =______,逆向循环的制冷系数ε=______。
【判断题】地下室的防水构造,必须解决好来自迎水面渗漏的问题。
A.
正确
B.
错误
【单选题】逆向卡诺循环可以进行制冷和供热,相应的制冷系数和供热系数表述正确的是
A.
逆向卡诺循环具有最大的制冷系数和供热系数
B.
所有制冷循环的制冷系数和逆向卡诺循环制冷系数一样
C.
所有供热循环供热系数和逆向卡诺循环供热系数一样
D.
制冷系数和供热系数一定都大于1
【单选题】逆向卡诺循环可以进行制冷和供热,相应的制冷系数和供热系数表述正确的是()
A.
所有制冷循环的制冷系数和逆向卡诺循环制冷系数一样
B.
制冷系数和供热系数一定都大于1
C.
所有供热循环供热系数和逆向卡诺循环供热系数一样
D.
逆向卡诺循环具有最大的制冷系数和供热系数
【简答题】为什么压缩空气制冷循环不采用逆向卡诺循环?
【判断题】制冷循环属于逆向循环,热泵循环属于动力循环(正向循环)。
A.
正确
B.
错误
【单选题】房水的最主要排出途径是( )
A.
虹膜
B.
脉络膜
C.
视网膜
D.
角膜
E.
房角小梁网
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