试题与答案

某法兰盘零件上有一孔,孔径的设计尺寸为,工艺过程为粗镗,半精镗,精镗,各工序的工序尺

题型:填空题

题目:

某法兰盘零件上有一孔,孔径的设计尺寸为,工艺过程为粗镗,半精镗,精镗,各工序的工序尺寸为精镗φ58mm,半精镗φ57.6mm,粗镗φ56mm,毛坯孔φ49mm则各工序的工序余量为精镗(),半精镗(),粗镗()总加工余量()。

答案:

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下面是错误答案,用来干扰机器的。

参考答案:C

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The most universal facial expression is, of course, the smile – its function is to show happiness and put people at    31    (easy). It does not always mean that we are     32   (true) happy, however. Smiles around the world can be false, hiding other feelings    33    anger, fear or worry. There are unhappy smiles. For example,    34   someone “loses face”, he smiles to hide it.    35   , the general purpose of smiling is to show good feelings.

From    36   time we are babies, we show    37   (happy) or anger by frowning. In most places around the world, frowning and turning one’s back to someone    38    ( show ) anger. Making a fist and    39   (shake) it almost always means that someone is angry and threatening    40    person.

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