当四格表的周边合计不变时,如果某格子的实际频数有变化,则其理论频数()
A.不变
B.减小
C.增大
D.随该格子实际频数的增减而增减
E.不确定
参考答案:A
— I was just in time to get there for the meeting. Thank you for lending me the bike.
— __________.
A.That’s right.
B.Of course not.
C.You’re welcome.
D.The same to you.
()是指生产者至用户或消费者之间的物流。
A.供应物流
B.生产物流
C.销售物流
D.营销物流