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【单选题】
一定量的单原子理想气体,从状态A变化到状态B,变化过程不知道。但若A态与B态的压力、温度和体积都已确定,那就可以求出( )A.
气体膨胀所作的功
B.
气体内能的变化
C.
气体分子的质量
D.
热容的大小
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【简答题】It's something that I always kind of (不确定的表达,带来美感。学会用这个词。很有力的词。) knew, but never really chose to think about too much. (前面一句 —— 人同此心) (下面一句,心同此理:) But the fact is, within the next 70 or 80 years – dep...
【简答题】英译汉:Today we are playing outside first, then we are all going to watch TV.
【简答题】Translate the following paragraph into Chinese: But the fact is, within the next 70 or 80 years – depending on how old you are and how long you last – we are all going to be either coffin dwellers or ...
【单选题】We are all going to the games. Why don't you come ______ ?
A.
up
B.
across
C.
along
D.
to
【单选题】activity(活动); keep away from fire(远离火) Our class is going to Beihai Park next Sunday. We are going to meet at the school gate at 7:00 on Sunday morning. And we are going to be back at 2:00 pm. We ...
A.
1
B.
2
C.
3
D.
4
【单选题】Since we all agree on this plan, the next thing we are going to do is to carry it out . The underlined part means _______. [ ]
A.
complete it
B.
do it
C.
put it up
D.
take it up
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