对观察单位用定量的方法测量某项指标所获得的资料是
A．计量资料
B．计数资料
C．配对资料
D．相关资料
E．等级资料
参考答案：A
Unsatisfied ______ with the payment, he took the job just to get some work experience. [ ]
A. as was he
B. as he was
C. as long as he was
D. was he as
如果矿石中有用矿物含量低，可浮性好、同时精矿质量要求高，则需选择的精选次数（）的流程。
A.多
B.少
C.较多
D.较少
