问题
问答题 简答题
机床主参数和尺寸参数根据什么确定？
答案
参考答案：
机床主参数：代表机床规格大小及反映机床最大工作能力的一种参数。《GB/T15375-94金属切削机床型号编制方法》尺寸参数指机床的主要结构尺寸参数，包括：①与被加工件有关的尺寸；②标准化工具或夹具的安装面尺寸。
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机床主参数和尺寸参数根据什么确定？
参考答案：
机床主参数：代表机床规格大小及反映机床最大工作能力的一种参数。《GB/T15375-94金属切削机床型号编制方法》尺寸参数指机床的主要结构尺寸参数，包括：①与被加工件有关的尺寸；②标准化工具或夹具的安装面尺寸。
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| Soon it would be the holidays, but before that, there were final 1 . All the kids had been working hard for some time, reviewing their 2 . If they didn't pass the exams, they would have to 3 them in September. There were usually a few who 4 , but Jane didn't want to be one of them. She had worked hard all year, but she was working so hard that her mother 5 her. She went to bed too late. The night before the big day, her mother 6 that she should have an early night and take a sleeping pill. She promised to 7 her up in the morning. Jane was too 8 to fall asleep. Her mind kept jumping from subject to subject. At last, the 9 did work. In no time at all, she was sitting in the examination hall, looking at the paper, but she couldn't answer 10 of the questions. Everyone 11 her was writing pages and pages. 12 , she couldn't find anything to write about. From time to time she looked at her 13 . Time was running 14 . There was only an hour to 15 . She started one question, wrote two sentences, 16 and tried another. With only half an hour left she wrote 17 two sentences. By this time she was so worried that she started 18 . Her whole body shook. It shook so much that she woke up. She was still in bed and it had all been a terrible 19 . A minute later, 20 called her name. | ||||
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