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【简答题】
任务型阅读。 Maybe you are an average student. You probably think you will never be a top student. This is not necessary so, however. Anyone can become a better student if he or she wants to. Here's how: 1. Plan your time carefully. When you plan your week, you should make a list of things that you have to do. After making this list, you should make a schedule of your time. First your time for eating, sleeping, dressing, etc. then decide a good, regular time for studying. Don't forget to set aside enough time for entertainment. A weekly schedule may not solve all your problems, but it will force you to realize what is happening to your time. 2. Find a good place to study. Look around the house for a good study area. Keep this space, which may be a desk or simply a corner of your room, free of everything but study materials. No games, radios, or television! When you sit down to study, concentrate on the subject. 3. Make good use of your time in class. Take advantage of class time to listen to everything the teachers say. Really listening in class means less work later. Taking notes will help you remember what the teacher says. 4. Study regularly. When you get home from school, go over your notes. Review the important points that your teacher mentioned in class. If you know what your teacher is going to discuss the next day, read that material will become more meaningful, and you will remember it longer. 5. Develop a good attitude about tests. The purpose of a test is to show what you have learned about a subject. They help you remember your new knowledge. The world won't end if you don't pass a test, so don't be overly worried. There are other methods that might help you with your studying. You will probably discover many others after you have tried these. How to become a better student
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【单选题】一定量理想气体与 300K 大热源接触做等温膨胀,吸热 Q=600KJ ,对外所做功为可逆功的 40% ,则系统的熵变Δ S= ( )。
A.
-5KJ.K
B.
5KJ.K
C.
-2KJ.K
D.
2KJ.K
【简答题】一定量理想气体与300K大热源接触做等温膨胀,吸热Q=600 kJ,对外所做功为可逆功的40%,则系统的熵变∆S=____。
【单选题】下列属于热辐射光源的是?
A.
卤钨灯
B.
日光灯
C.
氙气灯
D.
LED灯
【多选题】下列属于热辐射光源的是( )
A.
白炽灯
B.
卤钨灯
C.
荧光灯
D.
金属卤化物灯
【简答题】一定量理想气体与300K大热源接触做等温膨胀,吸热Q=600kJ,对外所做功为可逆功的40%,则系统的嫡变 S__
【判断题】装有空调的汽车上,A/C开启时,可以有效地防止前挡风玻璃上结雾。
A.
正确
B.
错误
【单选题】下列属于热辐射光源的是( )
A.
荧光灯
B.
金属卤化物灯
C.
钠灯
D.
卤钨灯
【简答题】一定量理想气体与300K大热源接触做等温膨胀,吸热Q=600 kJ,对外所做功为可逆功的40%,则系统的熵变 ( )。
【简答题】一定量理想气体与300K大热源接触做等温膨胀,吸热600kJ,对外所做功为可逆功的40%,则系统的熵变为______kJ•K-1。
【判断题】装有空调的汽车上,A/C开启时,可以有效地防止前挡风玻璃上结雾。
A.
正确
B.
错误
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