下列说法不正确的是( )
A.ROLLBACK表示事务不成功结束
B.无级联调度是不可恢复的
C.共享锁又称为S锁或读锁
D.排他锁又称为X锁或写锁
参考答案:B
A.2.4×1019C
B.-6.4×1019C
C.-1.6×1018C
D.4.0×1017C
As a rule, ____ attention you pay to your spelling, ____ mistakes you will make. [ ]
A. the more; the less
B. the less; the fewer
C. the less; the more
D. the more; the more