传输一个码元所需的时间，称为（）。
参考答案：码元宽度
Which from of power is the LEAST effective from the project manager's viewpoint in terms of influencing functional manager
A．Formal powe
B．Expert powe
C．Penalty powe
D．Referent powe
DSA的中文全称叫做
A．数字减影成像B．数字血管成像C．数字减影血管造影D．数字造影血管减影E．数字血管断层成像
