根据网络故障的性质,可将网络故障分为().
A.网络物理故障和网络逻辑故障
B.网络物理故障和路由故障
C.路由故障和主机故障
D.主机故障和线路故障
参考答案:A
At Christmas people _________ us to help the poor.
A.appeal to
B.aim at
C.get into
D.decide on
喘证的发病机制主要在()
A.肺
B.肺脾
C.肺肾
D.脾肾
E.肾