【单选题】What is the main implication ofthe fable Swimming in a Waterfall?
A.
Talent is more important than other things.
B.
When we are in danger, we must help each other .
C.
The method of success is to follow nature.
D.
If we want to achieve success, we must make arduous efforts.
【单选题】下列关于PLC编程软件安装方法的描述中,不正确的是( )。
B.
先安装通用环境,解压后,进入相应文件夹,点击安装
C.
在安装时,最好把其他应用程序关掉,包括杀毒软件
【简答题】GCr15属于____钢,其碳的质量分数为____,Cr的质量分数为____。
【简答题】判断20CrMnTi与GCr15属于何类钢(按用途分)?分析其中各合金元素的作用,并说明这两种钢的最终热处理特点。
【简答题】结合诗歌内容说说诗歌表达了诗人怎样的情感?(3分)
【单选题】The waterfall model of the software process is _________.软件过程的瀑布模型是_________。
A.
Suitable to the situation when the requirement is defined explicitly.
B.
A good method for quickly constructing executable software product.
C.
Suitable for the software product which is developed by a large team.
D.
A model which cannot be used at present.
【单选题】对下面这首诗的理解与赏析,不正确的一项是( ) 贾生1 李商隐 宣室求贤访逐臣,贾生才调更无伦。 可怜夜半虚前席,不问苍生问鬼神。 注:1贾生:贾谊,西汉初年著名的政论家,才华横溢。