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【单选题】
数据库管理系统是数据库系统的核心,它负责有效地组织、存储、获取和管理数据, 属( ),是位于用户与操作系统之间的一层数据管理软件。
A.
系统软件
B.
工具软件
C.
应用软件
D.
数学软件
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举一反三
【简答题】请聆听下面对话,将适合的字词填入空格中: training session skills on-the-job training guidance mentor Preparing for a New Position M: I just heard that you got a new job. Congratulations! W: Thanks, I'm reall...
【简答题】计算机检索的基本检索技术主要有布尔逻辑检索、位置检索、 和字段限制检索。
【单选题】听力原文:W: Did you hear that Greg got a job in his uncle's law office? M: Like they say, it's who you know that counts. Q: What does the man imply? (18)
A.
He knows someone who lost there jobs.
B.
Greg only got the job because of his uncle.
C.
Greg and his uncle work as accountants.
D.
He doesn't know the man's uncle.
【简答题】听材料,回答问题。 1. Where is the railway station? [     ] A. On the left of the street. B. At the end of the street. C. Behind a red building. 2. How will the man get there? [     ] A. On foot. B. Take a bus...
【单选题】直线6x+2y+5=0与直线y=-3x-1的位置关系是( )
A.
平行
B.
相交
C.
重合
【简答题】直线x-3y=1与直线2x-6y=5的位置关系是____.
【单选题】听力原文:W: I am so lucky I don't have the similar job as yours. Working all night and sleeping in the daytime. How terrible it is to be like this all the time. M: Oh, I stopped that when I got my promoti...
A.
The woman envies the man's job.
B.
The man stopped working last month.
C.
The man works three nights every two weeks.
D.
The man has two free days for every three days he works.
【多选题】编制工程量清单,其工程数量的有效位数应遵守下列规定 :( )
A.
以 “吨”位单位应保留小数点后三位数字
B.
以 “立方米”为单位应保留小数点后两位数字
C.
以 “米”为单位应取整数
D.
以 “平方米”为单位,应保留小数点后一位数字
【判断题】在中性点不接地的电力系统中,系统正常运行时,三个相的相电压 、 、 是对称的,即其向量和为零 ,且各相的对地电压 就是各相的相电压 。
A.
正确
B.
错误
【简答题】计算机检索的基本检索技术主要有 、位置检索、 和字段限制检索。
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