相对厚度（厚弦比）。

A. 抽查审查法
B. 全面审查法
C. 重点审查法
D. 对比审查法

A. 不存在进入和退出障碍
B. 存在潜在的产品差异
C. 信息不能完全获得
D. 较高的行业集中度

A. EIGRP supports VLSM， route summarization， and routing update authentication.
B. If the feasible successor has a higher advertised distance than the successor route， it becomes the primary route.
C. Passive routes are in the process of being calculated by DUA
D. EIGRP exchanges full routing table information with neighboring routers with every update.
E. A query process is used to discover a replacement for a failed route if a feasible successor is not identified from the current routing information.

A. 升温
B. 降温
C. 增压
D. 降压