单项选择题
Which of the following is not a valid linguistic sort element?（）
A. Accent expansion B. Canonical equivalence C. Reverse secondary sorting D. Ignorable characters E. Character rearrangement
单项选择题 What is the name of the file that identifies the set of available locale definitions?（）
单项选择题 Case-insensitive sorts are always accent insensitive by default.（）
单项选择题 Which NLS parameter directly governs linguistic searches?（）
