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搜题/搜资源
【单选题】【消耗次数:1】
部分数控系统自诊断能力较差,能够进行诊断的范围有限。该说法( )
①
正确
②
错误
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相关题目
【单选题】
计算机数控系统都具有很强的自诊断功能。该说法( )
①
正确
②
错误
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【单选题】
不同的数控系统有相同的程序段格式。该说法( )
①
正确
②
错误
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【单选题】
数控系统是数控机床的重要部分,它随着计算机技术的发展而发展。该说法( )
①
正确
②
错误
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【判断题】
利用报警号进行故障诊断是数控机床故障诊断的主要方法之一。该说法( )
①
正确
②
错误
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【单选题】
不同的数控系统,程序号地址码所用的字符相同。该说法( )
①
正确
②
错误
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【单选题】
数控机床在加工过程中,能按照数控系统的指令自动进行加工、变速及完成其他辅助功能。该说法( )
①
正确
②
错误
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【判断题】
一般数控机床的机械故障诊断方法,可采用所谓的“实用诊断方法”和“现代诊断方法”。该说法( )
①
正确
②
错误
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【单选题】
数控系统的组成( )
①
数控程序 、输入输出设备
②
CNC装置
③
可编程控制器
④
主轴驱动装置和进给驱动装置等
⑤
以上内容全选
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【单选题】
有些数控系统允许用半径参数R来代替圆心坐标参数I、J、K、编程。该说法( )
①
正确
②
错误
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【判断题】
提高数控设备的加工精度,一般通过减少数控系统的控制误差和采用补偿技术来达到。该说法( )
①
正确
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错误
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随机题目
【单选题】
What meaning is referred to if we say the meaning of “dog” is an animal with four legs and a tail, often kept as a pet or trained for work?
①
denotative meaning
②
connotative meaning
③
extended meaning
④
inspired meaning.
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【单选题】
What do the following examples indicate? Big, huge; enormous, immense; male, masculine .
①
synonyms
②
antonyms
③
hyponyms
④
collocations.
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【单选题】
What is referred to if we say “see a movie, watch a play, look at a picture”?
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denotative meaning
②
connotative meaning
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collocations
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synonyms.
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【单选题】
What are two categories of vocabulary?
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Receptive vocabulary and productive vocabulary
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innate vocabulary and learned vocabulary
③
familiar vocabulary and unfamiliar vocabulary
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new vocabulary and old vocabulary.
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【单选题】
What are two grammar practice activities?
①
Mechanical practice and meaningful practice
②
Volume practice and communicative practice
③
Interest practice and meaningful practice
④
Mechanical practice and success oriented practice.
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【单选题】
What are two broad categories of knowledge?
①
Implicit knowledge and explicit knowledge
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Obvious knowledge and unobvious knowledge
③
Inductive knowledge and deductive knowledge
④
Refereed knowledge and inferred knowledge.
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【单选题】
Which of the following steps are typical for the deductive grammar teaching method?
①
Give examples→explain rules→students do practice activities
②
Authentic language data is provided→induces learners to realize grammar rules→apply the new structure to produce sentences (the inductive method)
③
Explicit rules are give to students→Authentic language data is provided→apply the new structure to produce sentences (the guided discovery method)
④
All of the above.
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【单选题】
Which of the following statement is not true?
①
Grammatical competence is essential for communication
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There is a positive role of instruction for grammar learning
③
Grammar teaching can enhance learner proficiency
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Grammar learning is completely useless for children.
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【单选题】
Which of the following is not grammar presentation method?
①
Deductive method
②
Inductive method
③
Guided discovery method
④
Communicative teaching method.
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【单选题】
What is the realistic goal of teaching pronunciation?
①
Consistency
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Intellegibility
③
Communicative efficiency
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All of the above.
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