Serialization delay and（）delay are the two components of network delay that are improved by increasing bandwidth. Serialization delay, i.e. the amount of time it takes to put the（）on the wire, and queuing delay (depth of the queue) are improved by increasing the（）from a 128kbps circuit to a T1. However, three other components of delay, routing/switching delay, distance delay, and protocol delay are components that can not be positively affected by an （）in bandwidth. If the circuits are not over-utilized, then increasing the bandwidth to improve the（）of the application will only result in an increased bandwidth with no positive effects on performance.

then increasing the bandwidth to improve the（）of the application will only result in an increased bandwidth with no positive effects on performance.

A．capability

B．cost

C．amount

D．performance

Good-Pasturc综合征常见的免疫病理特征是（）

A.IgG和C3呈线条状沉积于毛细血管壁

B.IgG和C3呈细颗粒状沿毛细血管壁沉积

C.IgG和C3呈颗粒状沉积于系膜区及毛细血管壁

D.无或仅微量免疫复合物

E.IgG、IgA、IgM、C3呈多部位沉积