1+3+5+7+9+11+13的值是( )
A.49
B.50
C.48
D.38
参考答案:A
List and explain FOUR methods of selecting a sample of items to test from a population in accordance with ISA 530 (Redrafted) Audit Sampling and Other Means of Testing. (4 marks)
粗集料针片状颗粒含量(游标卡尺法)试验中按()选取1kg左右的试样。
A.分料器法
B.四分法
C.三分法
D.二分法