【判断题】Entreport trade involves export without further processing or transformation of a good that has been imported.
【多选题】立体三面投影图间的关系是()。
A.
V面投影和H面投影符合上下相等,即“高相等”的关系
B.
V面投影和W面投影符合上下对齐,即“高平齐”的关系
C.
H面投影和W面投影符合宽度相等,即“宽相等”的关系
D.
V面投影和H面投影符合左右对正,即“长对正”的关系
【简答题】In the microbial transformation of contaminants, organisms can either “eat” the toxins or break them down in the process of consuming other substances.
【判断题】A value chain is composed of the key functional inputs that an organization provides in the transformation of raw materials into a delivered product or service.
【单选题】立体三面投影图间的关系不是:
A.
V面投影和H面投影符合上下相等,即“高相等”的关系
B.
V面投影和W面投影符合上下对齐,即“高平齐”的关系
C.
H面投影和W面投影符合宽度相等,即“宽相等”的关系
D.
V面投影和H面投影符合左右对正,即“长对正”的关系
【单选题】Which of the following correctly identifies a limitation of logarithmic transformation of variables?
A.
Taking log of variables make OLS estimates more sensitive to extreme values in comparison to variables taken in level.
B.
Logarithmic transformations cannot be used if a variable takes on zero or negative values.
C.
Logarithmic transformations of variables are likely to lead to heteroskedasticity.
D.
Taking log of a variable often expands its range which can cause inefficient estimates.
【多选题】立体三面投影图间的关系是 ( )。
A.
V面投影和H面投影符合上下相等,即“高相等”的关系
B.
V面投影和W面投影符合上下对齐,即“高平齐”的关系
C.
C.H面投影和W面投影符合宽度相等,即“宽相等”的关系
D.
V面投影和H面投影符合左右对正,即“长对正”的关系