示波器铭牌一般都会标识两个参数，比如泰克TDS1002B示波器标识的60MHz和1GS/s，请解释这两个参数的含义。

A. 犀角地黄汤
B. 黄连解毒汤
C. 清营汤
D. 白虎汤
E. 银翘散

A. Each target database requires its own recover catalog.
B. RMAN scripts can be stored in the recovery catalog or the target control file.
C. A channel is a stream of data to a device type and corresponds to one server session.
D. The RMAN executable interprets sever session commands and establishes connections to the target database.