根据《中国移动PON网络工程施工及验收规范》,从设备的网络侧接口到用户侧接口的E1通道的传输时延应<()ms。
A.1
B.5
C.10
D.15
参考答案:A
I was born in China and have been living here. I can’t imagine ______ anywhere but China.
A.work
B.working
C.to work
D.having worked
女,26岁,右示指近节不小心在桌边敲击一下,局部肿痛,X线片显示:示指近节指骨膨胀性改变,不偏心,中央有蜂窝状吸收区,也有散在的钙化斑块,考虑为内生软骨瘤,最适宜采取()
A.截指+化学治疗
B.化学治疗+免疫治疗
C.病灶整块切除并植骨
D.病灶切除并移植同种异体骨
E.病灶整块切除并自体带血管骨移植