简述竞技健美操基本步伐分类。

A. Interfaces have a default metric of 1.
B. Level 1 is intra - area and level 2 is interarea.
C. Level 1 routing is between an end system (ES) and IS while Level 2 routing is between an IS and I
D. Hosts send ISHs while routers send ESHs.
E. IS - IS is an open standard.
F. Metrics depend on interface speed.

A. 1975年宪法
B. 1976年宪法
C. 1978年宪法
D. 1982年宪法

A. 富水
B. 乌江
C. 泸水

A. 因支票有涂改，银行不得受理
B. 开户单位在更改处签章证明后，可以受理
C. 开户单位出证明后，银行在更改处加盖私章