900MHZ宽带直放机传输时延应小于等于多少?
参考答案:
1μs
医疗事故必须是给患者造成危害结果,除了
A.组织器官损伤导致功能障碍
B.因诊疗护理过失延长了治疗时间
C.残疾
D.严重毁容
E.死亡
I have to eat _____ food than before, or I'll get fatter and fatter. [ ]
A. a few
B. fewer
C. less
D. little