Which statement is true about FLUSH LOGS command?()
A. It requires the RELOAD, FILE, and DROP privileges
B. It closes and reopens all log files
C. It closes and sends binary log files to slave servers
D. It flushes dirty pages in the buffer pool to the REDO log
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抢夺是指以非法占有为目的,(),公然夺取公私财物的犯罪行为。
A. 公然
B. 乘人不备
C. 快速
D. 等待时机
纯棉纺实测单纱捻度比设计捻度要小,单号纱数越少,捻度损失越小。
A. 正确
B. 错误
“故人西辞黄鹤楼,烟花三月下扬州”这首诗是礼拜送别哪位诗人时所做?