SDH开销主要用于网络的()。
A.维护
B.复接
C.分解
D.运行
E.管理
F.组网
参考答案:A, D, E
As everybody knows,kangaroos are native________Australia and are often regarded as one of Australia’s national treasures.
A.in
B.to
C.from
D.with
急性鼻炎的并发症为()。
A.筛窦炎
B.急性中耳炎
C.急性咽喉炎
D.结膜炎
E.上颌窦炎