【单选题】opportunity的重音应该是( )
【单选题】What is Friday's opportunity cost of producing one coconut? What is Friday's opportunity cost of producing 1 fish?
A.
The opportunity cost of one coconut is two fish. The opportunity cost of one fish is thirty coconuts.
B.
The opportunity cost of one coconut is thirty fish. The opportunity cost of one fish is two coconuts.
C.
The opportunity cost of one coconut is 1/15 fish. The opportunity cost of one fish is fifteen coconuts.
D.
The opportunity cost of one coconut is fifteen fish. The opportunity cost of one fish is two coconuts.
【判断题】重复抽样的抽样平均误差一定小于不重复抽样的抽样平均误差
【单选题】国家对进口可用作原料的固体废物的国内收货人及国外供货商实行注册登记制度,向中国出口可用作原料的固体废物的国外供货商。应当取得( )颁发的注册登记证书。
【多选题】不重复抽样的平均误差()。
D.
在(N-n)/(N-1)趋于1时,可采用重复抽样平均误差公式计算。
【单选题】国家对进口可用作原料的固体废物的国内收货人以及国外供货商实行注册登记制度。向中国出口可用作原料的固体废物的国外供货商,应当取得( )颁发的注册登记证书。
【单选题】国家对可用作原料固体废物的国外供应商实行( )