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【单选题】
1 mol 单原子理想气体,在 300K 时绝热压缩到 500K,则其焓变 ΔH 约为:A.
4157 J
B.
596 J
C.
1255 J
D.
994 J
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举一反三
【单选题】—What does Anna's mother do? —She is a doctor. She works in a _____. [ ]
A.
TV station
B.
supermarket
C.
bank
D.
hospital
【简答题】请完成第四章课后作业 P97 页 第 5 题。
【单选题】The association between_____has not yet been found in Australia.
A.
ozone levels and hospital admissions for asthma
B.
hazy days and more asthma attacks in children
C.
the levels of particles in the air and death rates
D.
high levels of pollution and more symptoms
【单选题】None of us expected the president to______at the party. We thought he was still in hospital．
A.
turn in
B.
turn down
C.
turn out
D.
turn up
【单选题】She sufferred a mental disease for quite some time and in the end she _____ go into a mental hospital.
A.
had to
B.
must
C.
would like to
D.
could
【简答题】请完成第四章课后作业 P97 页 第 7 题。
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