第2题
A、采用不同类型的成分,这些不同数据源不受同一模式约束,而且要求数据整合
B、在浏览数据集时,完全知道它们的模式
C、在异构数据库中交换和转换数据
D、在浏览数据集时,并不完全知道它们的模式
第8题
Read and analyze the following short text and identify the four stages of the SPSE approach. (a) Since its inception, the National Highway Traffic Safety Administration has been an advocate for the American public – working to keep people, vehicles and roads safe. (b) Culture, technology and innovations both steer and detour us on our Road to Zero fatalities. (c) In 2015 alone, 35,092 lives were lost in motor vehicle crashes. (d) Crashes are no accident and each tragedy is preventable. (e) Americans deserve safer roads, and that starts with culture. (f) NHTSA is taking the initiative to create the future as opposed to just letting it happen. (g) In our view, the only acceptable goal for roadway fatalities is zero. (h) Our strategic plan, “The Road Ahead”, highlights three lanes that can deliver a future free from motor vehicle fatalities. SOURCE: Traveling the three lanes on the Road to Zero. Available at: https://www.nhtsa.gov/press-releases/traveling-three-lanes-road-zero. (Accessed: 26 December 2016). Stages Sentences Situation 1. _____________ Problem 2._____________ Solutions 3._____________ Evaluation 4. _____________ 注意:请把句子的代码填入,代码间空一格 1. __________
第10题
A、静态数组通常用于存储个数范围可以确定的数据
B、动态数组常用于存储数据类型不断变化的数据
C、数组可以分为一维数组、二维数组和多维数组
D、根据数组元素数目是否可变,可将数组分为动态数组和静态数组
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