【单选题】【消耗次数：1】
影响数控车床加工精度的因素很多，要提高加工工件的质量，有很多措施，但（ ）不能提高加工精度。
①
将绝对编程改变为增量编程
②
正确选择车刀类型
③
控制刀尖中心高误差
④
减小刀尖圆弧半径对加工的影响
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相关题目
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加工中心编程具有特点说法错误的是（ ）
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根据加工批量等情况，决定采用自动换刀还是手工换刀
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首先应进行合理的工艺分析
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Which of the following is the advantage of whole class work?
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It is an ideal way to show materials and do presentations together
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It allows students to work together rather than under teacher’s guidance.
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There is always a great chance of different opinions and contributions to the work
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It is less stressful.
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Which of the following is the time when students work in groups?
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When all the students are under the control of the teacher
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When students work in pairs on an exercise or a task
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Controller
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Controller, assessor
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Organizer, prompter
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Participant, resource-provider
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When all the students are under the control of the teacher
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When students work in pairs on an exercise or a task
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When students work in small groups
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Their language proficiency is low
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They are fresh from the university
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Their instructions are too short
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They are not able to target their instructions to the level of the learners.
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Give directions to tasks or activities, checking comprehension, giving feedback
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Providing explanations to a concept or language structure, drawing attention
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Setting requirements, checking comprehension, assigning homework
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All of the above.
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Use simple instructions and make them suit the comprehension level of the students
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