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【单选题】
对于反应: Cr 2 O 7 2 - + 6Fe 2 + + 14H + = 2Cr 3 + + 6Fe 3 + + 7H 2 O ,下列叙述正确的是:A.
滴定曲线对称
B.
滴定曲线不对称，计量点的电势偏向 Cr 2 O 7 2 － /Cr 3 ＋ 电对一方
C.
滴定曲线不对称，计量点的电势偏向 Fe 3 ＋ /Fe 2 ＋ 电对一方
D.
突跃大小与反应物的初始浓度无关
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【单选题】Detroit is famous for the production of _____.
A.
automobile
B.
timber
C.
bamboo
D.
plastic
【单选题】What are Parisians famous for?
A.
Their pursuit of independence.
B.
Their enthusiasm for conversation.
C.
Their ability to keep the city flourishing.
D.
Their devotion to developing a multiple culture
【单选题】Detroit is famous for the production of _____.
A.
automobile
B.
timber
C.
bamboo
D.
petroleum
【单选题】Lance is famous _____ his achievements and courage _____ cycling. [ ]
A.
as; in
B.
for; in
C.
for; for
D.
as; for
【单选题】what are Parisians famous for?
A.
Their pursuit of independence.
B.
Their enthusiasm for conversation.
C.
Their ability to keep the city flourishing.
D.
Their devotion to developing a multiple culture.
【简答题】A.ATP B.CTP C.UTP D.GТР氨基酸活化的能量来源是( ) 原核生物肽链延长需要的能量来源是( ), DNA复制所需要的能量来源是( )
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