某一变量分为两组:15~20,21~25,由此可以判断该变量为一连续变量。()
参考答案:错
A defensive stock is best characterized as:()
A. being heavily influenced by aggregate business activity.
B. generally retaining a large portion of earnings.
C. having low systematic risk.
期末账务处理首先要进行的工作是( )。
A.定义转账凭证
B.试算平衡
C.对账
D.结账