Please your bill before you pay. [ ]
A. watch
B. check
C. see
D. look
答案:B
常用晶体管放大电路有哪几种?最常用的晶体管电路是那种? 答:
该病影像学检查首选
A.B超
B.FTC
C.DSA
D.放射性核素扫描
E.CT