倍数浓度表示法是喷洒农药时经常采用的一种表示方法。配制时，可用下列公式计算：（）×药品用量=稀释后的药液量。
A. 使用约数
B. 使用倍数
C. 使用基数
D. 使用函数
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You executed the following SQL statement to shrink the EMPLOYEES table segment stored in the EXAMPLE tablespace: ALTER TABLE employees SHRINK SPACE CASCADE; Which statement is correct in this scenario?（）
A. The data in the segment will be compacted but the high water mark will not be adjusted
B. The EMPLOYEES table will be changed to read-only mode during the shrink operation
C. The indexes created on the EMPLOYEES table will need to be rebuilt after the shrink operation is over
D. The shrink behavior will be cascaded to all dependent segments of the table that support a shrink operation
E. Data manipulation language (DML) operations will not be possible on the EMPLOYEES table during the COMPACTION phase of the shrink operatio
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