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【单选题】
如图所示，一定量理想气体从体积 V1 膨胀到V2, AB 为等压过程, AC 为等温过程, AD 为绝热过程. 则吸热最多的是【图片】A.
AB过程
B.
AC过程
C.
AD过程
D.
不确定
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皮皮学刷刷变学霸
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【单选题】对于理想气体系统来说,在下列过程中,哪些过程系统内能增量为负值?[ ] (1) 等体降压过程. (2) 等温膨胀过程. (3) 绝热膨胀过程. (4) 等压压缩过程.
A.
只有(4)
B.
只有(1)(2)
C.
只有(1)(3)(4)
D.
只有(1)(4)
E.
(1)(2)(3)(4)
【单选题】The reason ________ she missed school this morning was ________ she had to look after her sick grandpa. [ ]
A.
why；that
B.
because；why
C.
that；because
D.
which；that
【简答题】After she had the report (type) ______, she put it on the director's desk.
【单选题】After she found she had lost the necklace, she and her husband ________ to find it. [ ]
A.
made up their minds
B.
made their mind
C.
had made up their mind
D.
had made minds
【简答题】After she had the report (type) , she put it on the director’s desk.
【单选题】Only after the woman had her own child ___ how difficult it was to be a mother.
A.
she realized
B.
had she realized
C.
she had realized
D.
did she realize
【单选题】After the accident, she had some difficulties _______ recalling what had happened _______ her.
A.
on; to
B.
on; on
C.
in; to
D.
in; on
【简答题】阅读理解 A man and a woman had a son eleven years after they married. They had a happy family and the boy was the apple of their eyes . When the boy was four years old, an accident happened. One night the...
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