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【单选题】
产生金属指示剂的僵化现象是因为( )。A.
指示剂不稳定
B.
MIn溶解度小
C.
金属离子与指示剂的条件稳定常数
D.
金属离子与指示剂的条件稳定常数＞金属离子与EDTA的条件稳定常数
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【简答题】The lengths of three sides of a are √29, √40, and 5, respectively. Then the area of this is ___.
【单选题】According to the author, the correspondence between the lengths of reporter's questions and Bush's answers increased because speakers ______.
A.
are trying to be accepted by others without even knowing it
B.
have a strong demand for balance when they are speaking
C.
always have an instinct to imitate the people they are talking to
D.
themselves want to know each other well
【简答题】Fillin the blanks in the following sentences with the appropriate forms of the word“subject . ” 1.The tyrant kept the people in _____. 2.Everyone is _____ to death. 3.The campers were ______ to extr...
【简答题】Fillin the blanks in the following sentences with“ immunity, immunized, immune.” 1.Officials of all foreign countries receive diplomatic ______. 2.People whose immune systems have fought the infection...
【单选题】No one could ever ___________ ths government of not caring about the poor.
A.
accuse
B.
charge
C.
condemn
D.
prosecute
【单选题】The purpose of the simulation is to estimate mean vehicle queue lengths and delays for various vehicle ______and train frequencies.
A.
popularity
B.
densities
C.
intensities
D.
prosperity
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