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【多选题】
为了保证数据的安全可靠和正确有效，DBMS必须提供统一的数据保护功能，主要包括数据的()等内容。A.
安全性
B.
完整性
C.
并发控制
D.
数据库恢复
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【简答题】节流阀是依靠改变（）来控制油液流量大小，从而用来控制液压系统中执行元件的（）
【简答题】How often did the family finally decide to have meals together? A . Every Sunday. B . Twice a week. C . Three times a week.
【简答题】2005年第五套人民币20元人民币的三处胶印缩微文字分别位于票面的什么的地方?
【单选题】In the 1900's, American townspeople usually washed and brushed their teeth and combed their hair in the kitchen. Or they kept a water pitcher (大水罐)and a wash basin in their rooms and took care of thes...
A.
cost little
B.
was more expensive than a water system
C.
was too expensive for every family to afford
D.
was not necessary
【简答题】At dawn, Mae Tuck set out on her horse for the wood at the edge of the village of Treegap. She was going there, as she did once every ten years, to meet her two sons, Miles and Jesse, and she was feel...
【简答题】《藏戏》练习题 一、在下面句子中填入读音为“shì”的字。 1 .许多( )图过江的百姓,被咆哮的江水吞( )。 2 .年轻的僧人唐东杰布许下宏愿,发( )架桥。 3 .藏戏艺人用歌舞说唱的形( ),表演宗教故( )、历史传说......一代代师传身教,使藏戏流传于( )。 4 .演妖魔时,戴上青面獠牙的面具,以( )压抑和恐怖。 二、在课文中找出...
【单选题】How often did the writer phone her family?
A.
Every day.
B.
Every other week.
C.
Every week.
【简答题】I visited my aunt in the countryside near the city in last week. I was surprised to see that great changes had been taken place in the countryside. Take my aunt’s family for example. We supply preciou...
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