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【单选题】
随机抽取一个n=50的样本,计算得到x-bar=60,s=15,要检验假设 H 0 :μ=65, H 1 :μ≠65,检验的统计量为A.
-3.33
B.
3.33
C.
-2.36
D.
2.36
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【简答题】国际法未加禁止行为的赔偿责任的国际法律责任分为________、________和________三种。
【单选题】Which of t he following statement about colloids is incorrect
A.
The appearance of colloids is homogeneous
B.
Colloids must be mixtures.
C.
Colloidal particles are charged. Colloidal mixtures are not charged
D.
Colloids and solutions cannot be distinguished by the Tindal phenomenon.
【单选题】Which one of the following is a valid statement of Avogadro's law?
A.
P/T = constant
B.
V/T = constant
C.
PV = constant
D.
V = constant × n
E.
V = constant × P
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