A公司销售一批商品给B公司，开出的增值税专用发票上注明的售价为10000元。增值税额为1700元。该批商品的成本为8000元。货到后B公司发现商品质量不合格，要求在价格上给予3%的折让。B公司提出的销售折让要求符合原合同的约定，A公司同意并办妥了相关手续，假定销售商品后还未确认收入，则A公司应确认销售商品收入的金额为（）元。

A.351

B.9700

C.11349

D.11700

Spread spectrum simply means that data is sent in small pieces Over a number of the (46) frequencies available for use at any time in the specified range. Devices using (47) spread spectrum (DSSS) communicate by (48) each byte of data into several parts and sending them concurrently on different (49) . DSSS uses a lot of the available (50) , about 22 megahertz (MHz) .

（48）是（）

A.splitting

B.combining

C.packing

D.compacting