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刀具半径补偿一般采用（ ）刀具半径补偿。
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刀具半径补偿的执行过程分为：、和 三个步骤。
请直接填写答案，不区别大小写，字母之间不空格1 Although we are not normally aware of it, most of us use our hands when we are talking. You can see this by turning down the sound on your television set.Notice how much the speakers use their hands as they talk. Our hands can show the shape and size of things (try describing a spiral staircase without using your hands!) and emphasize what we are saying. Some gestures, though, have special meanings; what do these people seem to be saying?2 These gestures are not made naturally: we have to learn them and they vary from one country to another. For example, how do you call someone to you? In Spain and many other countries you beckon someone with your palm down,which can look like the English sign for sending someone away. In Italy you wave good-bye with the back of your hand, which can look like the English sign for beckoning someone!3 What do you mean when you nod or shake your head? Nodding seems to be one of the few gestures found in nearly every country; it also means "yes" almost everywhere but in some parts of India, for example, shaking the head also means "yes." In Greece and Southern Italy and many other parts of the world, throwing the head back, which can look like a nod, means "no."4 When you see your friends,how do you greet them? People in many countries find the English cold and unfriendly because they often do no more than say "hello." Even adults shake hands usually only the first time they meet. French people, including school children, shake hands with their friends or kiss them on both cheeks, if they are close friends, each time they meet and when they leave one another. At home they do not go to bed without kissing everyone in the family good night, on both cheeks, and shaking hands with any visitors. The same thing happens in the morning. How do you think a French child might feel staying in your family?5 Other countries have different ways of greeting. The Eskimos rub noses.In Samoa people sniff one another, and in Polynesia you take hold of your friend's hands and use them to stroke your face.In China's Tibet it is very polite to stick your tongue out at someone; you are saying "there is no evil thought in my tongue!6 In some parts of East Africa it is considered very unlucky to point with your fingers, and so people turn their heads and put their lips in the direction they mean. In Britain some people " cross their fingers" for good luck but in Austria and Germany they hold their thumbs. In Britain, if the people in an audience do not like a performer and if they are not very polite, they may clap their hands slowly to mean "go away!" In other parts of Europe the slow hand clap is a great compliment! In Britain people may stand up as a sign of respect. In some other countries they sit down to show that they lookup to the person.7 There are many other signs used in different countries, and what is an insult in one country may not be understood or may have quite a different meaning in another. The English do not use gestures as much as many other people, and it is very easy for misunderstandings to arise with them.(570 words)Comprehension QuestionsMultiple ChoiceChoose the best answer from the four choices given below according to the text.1. To beckon someone in Spain, you should _____.A. throw your head backB. hold your thumb upC. wave your hand with your palm downD. nod toward yourself2. People in many countries find the English cold and unfriendly because they _____.A. often do no more than say "hello"B. sit down to look up a personC. only shake hands with people they meetD. clap their hands slowly after a performance they like3. Which gesture mentioned in this text is found in nearly every country bearing the same meaning?A. Clapping hands.B. Nodding the head.C. Saying "hello" to friends.D. Sending someone away.4. According to the text, which of the following nationalities will likely cause the most misunderstanding with their gestures?A. The Americans.B. The Australians.C. The Chinese.D. The English.5. From this text we can infer that____.A. it is proper to do no more than say "hello" to greet an EnglishmanB. it does not take gestures to tell someone about the layout of the Forbidden City in Beijing.C. it is easy to understand the gestures of other nationalitiesD. something like a gesture can never cause a misunderstanding
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