信源编码的主要任务是什么?
参考答案:
进行模拟/数字变换,以提高信号传输的有效性。
Investment in product quality improvement, especially defect prevention and appraisal, can often be borne by ______ .
A) the organizationB) the project management teamC) executive managementD) the project
某一特定商品或资产在某一特定地点的现货价格与其期货价格之间的差额称为()。
A.利差
B.套差
C.差价
D.基差