【判断题】决定材料强度的最基本因素是原子间接合力,原子间结合力越高,则弹性模量、熔点就越小。
【单选题】关于数据库与数据仓库错误的描述是
A.
数据库的数据是高度结构化. 复杂的,数据仓库的数据是简单的;
B.
数据库的数据是简单的,数据仓库的数据是高度结构化. 复杂的;
C.
数据库的数据主要面向业务操作,数据仓库的数据主要面向分析应用。
D.
数据库对响应时间要求高,数据仓库对响应时间要求相对较低。
【判断题】决定材料强度的最基本因素是原子间接合力,原子间结合力越高,则弹性模量、熔点就越小。( )
【判断题】在平面构成中,点只能代表其位置,不能代表面积,它没有大小和形状。
【多选题】下列试剂中,能与苯磺酰氯反应生成白色沉淀的是( )。
【单选题】Which of the following is one of the four well-known American technical reports?
【单选题】Which of the following is not the feature of technical reports?
【单选题】Which of the following criteria is used to classify technical reports into primary reports, progress reports, interim reports, and final reports?
【单选题】It has been said that most of the structural faults of technical reports result from the author's ______ with what he is writing that he neglects to worry enough about how and for whom he is writing.