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【单选题】
某恒容绝热箱中有 CH 4 和 O 2 混合气体,通电火花使其反应(电火花能可忽略),该变化过程的( )A.
ΔU=0 ΔH=0
B.
ΔU=0 ΔH>0
C.
ΔU=0 ΔH<0
D.
ΔU<0 ΔH>0
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举一反三
【单选题】Testimony from people who are recognized experts in their fields.
A.
expert testimony
B.
peer testimony
C.
direct quotation
D.
paraphrase
【简答题】From the text we know that _________ . [A] eyewitness testimony plays an essential part in the U. S. court trial [B] police identification is more reliable than that of the ordinary people [C] crime v...
【单选题】Testimony from ordinary people with firsthand experience or insight on a topic.
A.
direct quotation
B.
peer testimony
C.
hypothetical example
D.
expert testimony
【单选题】From the text we know that______.
A.
eyewitness testimony plays an essential part in the U.S. court trial
B.
police identification is more reliable than that of the ordinary people
C.
crime victims often fail to give positive identification of the suspects
D.
the jury relies more on the judge than on the eyewitness for a decision
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