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【单选题】
我国立法最早从什么时候开始,使用“知识产权”这个称呼?A.
1967《建立世界知识产权组织公约》
B.
1982《中华人民共和国商标法》
C.
1984《中华人民共和国专利法》
D.
1986《中华人民共和国民法通则》
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举一反三
【判断题】The protein has the properties of UV absorption, which has the maximum absorption peak at 260nm.
A.
正确
B.
错误
【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.
【简答题】用递等式计算 （1）六g+t6九÷（g九.g-g.g） （g）g8×（4t8÷六t）+19g （t）（1t6-88）×1t÷g6 （4）g4t×（g1九÷t九+18） （g）6吨4千克-g吨14千克 （6）g千克1九克+18千克六1九克．
【简答题】Instruments for measuring the absorption of UV, visible, and near-IR radiation are made up of one or more (1) ___________, (2) _____________, (3) _______________, (4)________________, and (5) ________...
【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】The absorption of UV or visible radiation generally results from _________ of bonding electrons.
【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
【简答题】图G=(V，E)有6个结点，其度数分别为1，4，4，3，5，5，问G有多少条边?
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