问题
单项选择题
下述哪一个种情况不属于故障恢复系统的处理范围( )。
A．由于逻辑错误造成的事务失败
B．由于恶意访问造成数据不一致
C．由于电源故障导致系统停止运行，从而数据库处于不一致状态
D．由于磁头损坏或故障造成磁盘块上的内容丢失
答案
参考答案：B
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下述哪一个种情况不属于故障恢复系统的处理范围( )。
A．由于逻辑错误造成的事务失败
B．由于恶意访问造成数据不一致
C．由于电源故障导致系统停止运行，从而数据库处于不一致状态
D．由于磁头损坏或故障造成磁盘块上的内容丢失
参考答案：B
If you go to a supermarket and find that there is no cashiers (收银员), would you still pay (付钱) for your things? People in our 1 are having a test of honesty(诚信测试) now． The supermarket here has a special area． This area sells 2 things like pens and knives． People need to scan (扫描) their things, and put the 3 into the cash desk all by themselves． 4 watches them． By now, the supermarket runs（经营） very 5 ． People say they enjoy the feeling of being honest． Once (又一次) I go to the supermarket to buy a note book． When I am ready to pay, I find I have no 6 on me． I am just going to put the note book 7 when a neighbour of mine sees me． He knows what my 8 is． And he says he will be glad to 9 me five yuan． I thank him and pay the note book 10 the money． Do you think the supermarket is doing a great job? And will you be glad to pay when you are in such a supermarket?
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