【简答题】液压系统中的压力取决于___________,执行元件速度取决于_____________.
【单选题】一个小组正在开发一个大型的银行存款系统,系统中包含上百万行客户的信息,现在正在调试sql语句,以进行查询的优化。可是,他们每次执行查询时,都返回好几百万行数据,显示查询结果非常费事。此时,比较好的解决方法是()
B.
把这些数据转换到文本文件中,再在文本文件中执行查找
D.
在查询语句中使用order by子句进行排序
【简答题】3-xsglk.sql 创建数据库的查询文件 请同学们下载上面创建数据库的查询文件然后运行查询文件创建本次练习用数据库。 按下面的查询要求写出查询命令并在自己的电脑上验证运行,如果有问题,上课时再提出问题,老师帮助你分析解决。 答案区按题序写出命令,如果执行有问题的命令,请用红字写在答题区,并注明问题现象。 (1) 查询student表中的所有记录(写出两条不同的命令)。 (2) 查询studen...
【判断题】( )锉刀的硬度应在 62~67HRC。A. 对 B. 错
【多选题】What verbal communication style(s) do you think Case 28 "Two Different Communication Styles" reflects?
A.
Direct and indirect styles of communication
B.
Self-enhancement and self-effacement styles of communication
C.
Elaborate, exacting and succinct styles of communication
D.
Personal and contextual styles of communication
E.
Instrumental and affective styles of communication
【单选题】Concordia’s communication process mainly relies on .
C.
personal communication
D.
a separate, specialized unit
【单选题】化学毒物与机体毒作用的剂量反应关系最常见的曲线型式是?()
【简答题】A person's intercultural communication competence is his capacity to communicate appropriately and effectively in a foreign language.
【单选题】What’s the author’s attitude towards the communication revolution?
A.
He thinks he is Luddite.
B.
He is indifferent to the communication revolution.
C.
He thinks it’s great, but worries about its unintended consequences.
D.
He thinks it is preferable to human contact.