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【多选题】
在简单随机重复抽样条件下,欲使误差范围缩小二分之一,其他要求保持不变,在样本容量必须()。A.
增加2倍
B.
增加3倍
C.
增加到4倍
D.
减少2倍
E.
减少3倍
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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
【简答题】Only when each ____step has been checked by other mathematicians will the proof be accepted.
【简答题】————与———— 的关系问题是社会学的基本问题。
【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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