企业长期资产的多寡与处置不会影响速度比率的高低。()
参考答案:错
______ is permanently stored in the computer and provides a link between the hardware and other programs that run on the PC.
A.Interface
B.Operating system
C.Internet
D.Applicaion software
哪一项不是肝血管瘤的声像图表现 (
A.边界清、锐的强回声结节
B.绕有强边的网格状回声
C.有相通或环绕的血管
D.回声均匀的团块伴后方回声衰减
E.回声团块具有可压缩性