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【判断题】
筛孔塔板易于制造，易于大型化，压降小，生产能力高，操作弹性大，是一种优良的塔板。A.
正确
B.
错误
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【多选题】The UV absorption properties of protein are due to the presence of
A.
tryptophan
B.
glutamic acid
C.
tyrosine
D.
aspartic acid
E.
histidine
【单选题】The hyperchromic effect refers to the increase in the UV absorption of DNA. This is a result of:
A.
Annealing
B.
Melting of DNA
C.
B to Z-DNA conversion.
D.
Increased hydrogen bonding between strands.
E.
Renaturation of DNA
【简答题】Only when each ____step has been checked by other mathematicians will the proof be accepted.
【单选题】The hyperchromic effect refers to the increase in the UV absorption of DNA. This is a result of:
A.
Annealing
B.
Melting of DNA
C.
B to Z-DNA conversion.
D.
Increased hydrogen bonding between strands.
E.
Renaturation of DNA
【单选题】Only when each _______ step has been checked by other mathematicians will the proof be accepted .
A.
theroy
B.
fertile
C.
logical
D.
elegant
【单选题】Only when each _______ step has been checked by other mathematicians will the proof be accepted.
A.
logical
B.
destructive
C.
bound
D.
liable
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