【简答题】【消耗次数:1】
Directions: Fill in the blanks with the phrases given below. Change the form if necessary.[comprise of; vote for; access to; wake up; be hooked to; in the long run; work at; to ones joy; pay off; be associated with]8. But[填空1]it is as inevitable as changes in the weather.
参考答案:
复制
纠错
相关题目
【简答题】 Directions: Fill in the blanks with the phrases given below. Change the form if necessary.[comprise of; vote for; access to; wake up; be hooked to; in the long run; work at; to ones joy; pay off; be associated with]5. He[填空1]in the morning to find himself alone in the house.
【简答题】 Directions: Fill in the blanks with the phrases given below. Change the form if necessary.[comprise of; vote for; access to; wake up; be hooked to; in the long run; work at; to ones joy; pay off; be associated with]1. Learning a foreign language may be difficult at the beginning, but your hard work will[填空1].
【简答题】 Directions: Fill in the blanks with the phrases given below. Change the form if necessary.[comprise of; vote for; access to; wake up; be hooked to; in the long run; work at; to ones joy; pay off; be associated with]9. Now its your turn to talk. Are you[填空1]the Internet?
【简答题】 Directions: Fill in the blanks with the phrases given below. Change the form if necessary.[comprise of; vote for; access to; wake up; be hooked to; in the long run; work at; to ones joy; pay off; be associated with]3. You might not expect such a frightening dream to[填空1]something joyful.
【简答题】 Directions: Fill in the blanks with the phrases given below. Change the form if necessary.[comprise of; vote for; access to; wake up; be hooked to; in the long run; work at; to ones joy; pay off; be associated with]2. The assignments for the course[填空1]computer-aided design problems.
【简答题】 Directions: Fill in the blanks with the phrases given below. Change the form if necessary.[comprise of; vote for; access to; wake up; be hooked to; in the long run; work at; to ones joy; pay off; be associated with]6. Here, the people[填空1]the electors from states who then choose the president.
【简答题】 Direction: Fill in the blanks with the phrases given below. Change the form if necessary.[have access to; go off; desperate for; put up with; always the case; give advice; concentrate on; arrive at; make an effort; come in handy]8. The prisoner[填空1]to escape, but he couldnt climb up the prison wall.
【简答题】 Direction: Fill in the blanks with the phrases given below. Change the form if necessary.[have access to; go off; desperate for; put up with; always the case; give advice; concentrate on; arrive at; make an effort; come in handy]9. But in reality this is not[填空1].
【简答题】 Direction: Fill in the blanks with the phrases given below. Change the form if necessary.[have access to; go off; desperate for; put up with; always the case; give advice; concentrate on; arrive at; make an effort; come in handy]1. We may[填空1], but we cant give conduct.
【简答题】 Direction: Fill in the blanks with the phrases given below. Change the form if necessary.[have access to; go off; desperate for; put up with; always the case; give advice; concentrate on; arrive at; make an effort; come in handy]10. I calculated that he would[填空1]the meeting.
随机题目
【单选题】 在SELECT语句的ORDER BY子句中,若需要按照指定列的升序拍列表,则使用的保留字是( )。
①  DESC
②  ASC
③  ABC
④  DEC
【单选题】 设一个关系为R(A,B,C,D,E,F,G),它的最小函数依赖集为FD={A→B,A→C,C→D,C→E,A→F ,F→G},若要规范化为高一级的范式,则将得到( )个关系。
①  1
②  2
③  3
④  4
【单选题】 设一个关系为R(A,B,C,D,E),它的最小函数依赖集为FD={A→B,A→C, (C,D) →E},则该关系的候选码为( )。
①  (A,C)
②  (C,D)
③  (A,D)
④  (B,D)
【单选题】 在建立基本表时,定义检查约束所使用的保留字为( )。
①  UNIQUE
②  DEFAULT
③  CHECK
④  NULL
【单选题】 在一个关系R中,若X、Y和Z为互不相同的单属性,并且存在X→Y和Y→Z,则必然存在X到Z的( )函数依赖。
①  部分
②  传递
③  直接
④  平凡
【单选题】 在数据库应用系统设计的逻辑设计阶段,不需要做的事情是( )。
①  建立基本表
②  建立视图
③  设置关系的完整性
④  画出ER图
【单选题】 设一个关系为R(A,B,C,D,E),它的最小函数依赖集为FD={A→B,C→D,(A,C) →E},则该关系的候选码为( )。
①  (A,B)
②  (A,C)
③  (A,D)
④  (A,E)
【单选题】 设两个关系中分别包含有m和n个属性,他们具有同一个公共属性,当对它们进行等值连接时,运算结果的关系中包含的属性个数为( )。
①  m*n
②  m+n-1
③  m+n
④  m+n+1
【判断题】 在关系数据模型中,两个关系(表)之间的直接联系有2种,1对1和1对多。
①  正确
②  错误
【判断题】 数据库的逻辑结构主要有四种,依次为层次、网状、关系和对象。
①  正确
②  错误