抢救时间的记录，不包括()。A．病人入院时间 B．医生到达时间 C．抢救措施落实时间

Living in a highly      society，you definitely have to arm yourself with modern technology and skills. [ ]

A. competitive      

B. fierce    

C. attractive    

D. sensitive

The ______ has several major components, including the system kernel, a memory management system, the file system manager, device drivers, and the system libraries.

A．application

B．information system

C．network

D．operating system

简述贲门痉挛的X线造影表现。

给出不同中断事件的中断处理程序的处理。

患儿，6个月。右睾丸未下降至阴囊内，查右阴囊空虚未触及睾丸，左侧发育正常。

若患儿2岁半隐睾仍未下降应采取的治疗是( )

A．睾酮治疗
B．右睾丸切除
C．右睾丸牵引固定
D．等到6岁仍不下降行右睾丸牵引固定术
E．现用绒毛膜促性腺激素治疗