如果搜集到的是总体数据，则经过（）就可以达到探索其内在数量规律性的目的。
A.推断统计
B.描述统计
C.抽样统计
D.判断统计
参考答案：B
The rain is plentiful in the southeast of the country , yearly .
A．as much as seventy inches
B．as seventy inches much as
C．seventy inches as much as
D．as much seventy inches as
下列不属于跳汰机的重产物排料装置的是（）
A、倒排矸
B、侧排矸
C、正排矸
