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成批铣削矩形齿离合器时,除采用刚度较好的三面刃铣刀铣削外,可利用( )将工件装夹在铣床的分度头上。A.
三爪自定心卡盘
B.
四爪单动卡盘
C.
专用心轴
D.
内胀式弹簧夹头
E.
微锥心轴
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【简答题】Corrections should be done as follows: Wrong word: underline the wrong word and write the correct word in the blank. Extra word: delete the extra word with an “×.” Missing word: mark the position of t...
【简答题】这是改错题,不是填空题哈! Correct the errors in the following passage. The passage contains ten errors, one in each indicated line. In each case, only one word is involved. Answers should be given like this: is -...
【简答题】Not many 17-year-old girls know how to solder (焊) copper pipes together or light a pilot light. These are 1 I’ve learned as an assistant to my 2 in his plumbing (管道) business. My summer job deals with...
【简答题】衡量粉体流动性的指标为
【简答题】5 Cross out one word which is wrong. Write
the correct word at the end. ► I haven’t got central heating; I need a
plumber to repair a new system. install 1 Our estate agent made the arrangem...
【简答题】The plumber went down to the cellar to fix the _________ pipe. 2. There is a _________ between his two front teeth. 3. You will _________ your health if you smoke. 4. Her boss is giving her ____...
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