Mechanical Equipment [Daily Question] Sunday, January 8, 2012
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Please hide your replies; editing after posting is ineffective! Those with different views on the provided answer keys can post discussions the next day. For responses from multiple accounts under the same IP, only the first one submitted counts as valid. This is a single-choice question: 5 points are awarded for the correct answer, and 2 points for the other answers. Please hide your reply; the method for doing this is: http://bbs.hcbbs.com/thread-492556-1-1.html. Single-choice question: The operation of using a scraper to remove a layer of ( ) metal from the surface of a workpiece in order to improve its machining precision is called scraping. A. Very thick B. Very thin C. Many D. Quite a few Answer: B
Reply 1# Power Center B
Reply 1# Power Center B: very thin
Reply 1# Power Center B