【单选题】以下哪个选项描述不正确。
A.
数据的静态特征包括数据的基本结构、数据间的联系以及对数据取值范围的约束。
B.
数据的动态特征是指对数据可以进行的操作以及操作规则。
C.
数据的基本结构、数据的约束条件和定义在数据上的操作统称为数据模型的三要素。
D.
数据是信息存在的一种形式,不通过解释或处理也是有用的信息。
【单选题】Growing concerns over the safety and efficacy of anti-depressant drugs prescribed to children have caught the eye of Congress and the New York state attorney general. Now they're becoming the catalyst...
A.
Growing concerns over the safety and efficacy of anti-depressant drugs prescribed to children.
B.
The requirements of Congress and the New York state attorney general.
C.
Changes within the pharmaceutical industry.
D.
The information provided by a dozen influential medical journals.
【单选题】Growing concerns over the safety and efficacy of anti-depressant drugs prescribed to children have caught the eye of Congress and the New York state attorney general. Now they're becoming the catalyst...
A.
Growing concerns over the safety and efficacy of anti-depressant drugs prescribed to children.
B.
The requirements of Congress and the New York state attorney general.
C.
Changes within the pharmaceutical industry.
D.
The information provided by a dozen influential medical journals.
【单选题】张若虚与贺知章、( )、张旭、并称为"吴中四士"的诗人是( )。
【单选题】Growing concerns over the safety and efficacy of anti-depressant drugs prescribed to children have caught the eye of Congress and the New York state attorney general. Now they're becoming the catalyst...
A.
Growing concerns over the safety and efficacy of anti-depressant drugs prescribed to children.
B.
The requirements of Congress and the New York state attorney general.
C.
Changes within the pharmaceutical industry.
D.
The information provided by a dozen influential medical journals.
【判断题】《春江花月夜》作者张若虚与贺知章,张旭、包融并称为“吴中四士” ( )
【判断题】某厨师包饺子,用面粉300g (每千克成本8元)制作30个皮,用肉馅200g (每 千克成本32元),制作20个陷心,此饺子的单位成本是0.4元。
【判断题】( )某厨师包饺子,用面粉300克(每千克成本8元)制作30个皮,用肉馅200克(每千克成本32元),制作20个馅心,此饺子的单位成本是0.4元。(0.5分)A. 对 B. 错