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【单选题】
蛋白质在等电点时，所带电荷之间的关系是
A.
只带正电荷
B.
只带负电荷
C.
静电荷为零
D.
负电荷大于正电荷
E.
正电荷大于负电荷
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参考答案：
举一反三
【单选题】根据中心极限定理可知，当样本量充分大时，样本均值的抽样分布服从正态分布,其均值为
A.
μ
B.
X
C.
σ 2
D.
σ 2 /n
查看完整题目与答案
【单选题】Which of the following data structure is the best choice for the representation of route map?
A.
Set
B.
Tree
C.
Graph
D.
List
查看完整题目与答案
【单选题】根据中心极限定理可知，当样本量充分大时，样本均值的抽样分布服从正态分布，其方差为
A.
μ
B.
X
C.
σ 2
D.
σ 2 /n
查看完整题目与答案
【单选题】According to paragraph 2, which of the following is true of the map published by William Smith?
A.
It indicates the locations of England's major canals.
B.
It became most valuable when the steam locomotive made rail travel possible.
C.
The data for the map were collected during Smith's work on canals.
D.
It is no longer regarded as a geological masterpiece.
查看完整题目与答案
【单选题】Study the above two maps. Among the cities marked on the map of the USA, which one is the closest to Beijing?
A.
San Francisco
B.
New Yor City
查看完整题目与答案
【单选题】Study the above two maps. Among the marked cities on the map of the USA, which one is the closest to Europe?
A.
San Francisco
B.
New York City
查看完整题目与答案
【单选题】一条导线从一已知控制点和已知方向出发，经过若干点，最后测到另一已知控制点和已知方向上，该导线称为（ ）。A. 支导线 B. 导线网 C. 附合导线 D. 闭合导线答案：C
A.
支导线
B.
导线网
C.
附合导线
D.
闭合导线
查看完整题目与答案
【单选题】根据中心极限定理可知，当样本量充分大时，样本均值的抽样分布服从正态分布的方差为
A.
μ
B.
X
C.
σ 2
D.
σ 2 /n
查看完整题目与答案
【单选题】根据中心极限定理可知，当样本量充分大时，样本均值的抽样分布服从正态分布的均值为
A.
μ
B.
X
C.
σ 2
D.
σ 2 /n
查看完整题目与答案
【单选题】根据中心极限定理可知,当样本量充分大时,样本均值的抽样分布服从正态分布,其分布的均值为
A.
μ
B.
C.
查看完整题目与答案
相关题目：
【单选题】根据中心极限定理可知，当样本量充分大时，样本均值的抽样分布服从正态分布,其均值为
A.
μ
B.
X
C.
σ 2
D.
σ 2 /n
查看完整题目与答案
【单选题】Which of the following data structure is the best choice for the representation of route map?
A.
Set
B.
Tree
C.
Graph
D.
List
查看完整题目与答案
【单选题】根据中心极限定理可知，当样本量充分大时，样本均值的抽样分布服从正态分布，其方差为
A.
μ
B.
X
C.
σ 2
D.
σ 2 /n
查看完整题目与答案
【单选题】According to paragraph 2, which of the following is true of the map published by William Smith?
A.
It indicates the locations of England's major canals.
B.
It became most valuable when the steam locomotive made rail travel possible.
C.
The data for the map were collected during Smith's work on canals.
D.
It is no longer regarded as a geological masterpiece.
查看完整题目与答案
【单选题】Study the above two maps. Among the cities marked on the map of the USA, which one is the closest to Beijing?
A.
San Francisco
B.
New Yor City
查看完整题目与答案
【单选题】Study the above two maps. Among the marked cities on the map of the USA, which one is the closest to Europe?
A.
San Francisco
B.
New York City
查看完整题目与答案
【单选题】一条导线从一已知控制点和已知方向出发，经过若干点，最后测到另一已知控制点和已知方向上，该导线称为（ ）。A. 支导线 B. 导线网 C. 附合导线 D. 闭合导线答案：C
A.
支导线
B.
导线网
C.
附合导线
D.
闭合导线
查看完整题目与答案
【单选题】根据中心极限定理可知，当样本量充分大时，样本均值的抽样分布服从正态分布的方差为
A.
μ
B.
X
C.
σ 2
D.
σ 2 /n
查看完整题目与答案
【单选题】根据中心极限定理可知，当样本量充分大时，样本均值的抽样分布服从正态分布的均值为
A.
μ
B.
X
C.
σ 2
D.
σ 2 /n
查看完整题目与答案
【单选题】根据中心极限定理可知,当样本量充分大时,样本均值的抽样分布服从正态分布,其分布的均值为
A.
μ
B.
C.
查看完整题目与答案
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