为什么在调度端允许进行远方投退智能保护重合闸、远方切换智能保护定值区，但不宜对智能保护其他软压板进行远方投退操作？

A. 网络上民众的舆情
B. 网络互动
C. 突发事件
D. 刺激性信息传播

A. 万事达卡
B. VISA卡
C. 运通卡
D. 大莱卡

A. INSTR returns the numeric position of a named character.
B. NVL2 returns the first non-null expression in the expression list.
C. TRUNCATE rounds the column, expression, or value to n decimal places.
DECODE translates an expression after comparing it to each search value.
E. TRIM trims the heading of trailing characters (or both) from a character string.
F. NVL compares two expressions and returns null if they are equal, or the first expression of they are not equal.
G. NULLIF compares twp expressions and returns null if they are equal, or the first expression if they are not equal.