--- Sorry, you’ll have to wait for a day or two and then your dress ______ .

--- OK, I’ll come to fetch it then.

A．is finished

B．will be finished

C．has been finished

D．will have finished

关于频谱多普勒技术的应用，不对的有

A．测量血流速度

B．确定血流方向

C．确定血流种类，如层流、射流等

D．了解组织器官的结构

E．获得速度时间积分，压差等有关血流的参数