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用样板比较法测量表面粗糙时，一般能可靠地测出Ra为（）的表面粗糙度值。
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在D5000系统中，修改一张需要离线维护的表时，模型维护服务在接收到请求后，下列修改顺序正确的是（）
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国家规定安全色有（）种。
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新生儿先天性髋关节脱位的体征为( ) A．患侧肢体缩短 B．健侧肢体缩短 C．患侧肢体延长 D．健侧肢体延长 E．患侧肢体痉挛
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应急预案能最大程度降低突发事故的危害，减少事故的人员伤亡和经济损失。
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下面关于抢救过程的再判定，其中正确的是（）。
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怎样绘制校正曲线？
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Short Answers1 Auctions are public sales of goods conducted by an officially approved auctioneer. Heasks the crowd assembled in the auction-room to make offers, or "bids", for the variousitems on sale. He encourages buyers to b 记 higher figures, and finally names the highestbidder as the buyer of the good. Practically all goods whose (lualities vary are sold byauction. Among these are coffee, skins, wool, tea, furs, species, fruit and vegetables andwines. Auction sales are also useful for land and property, antique furniture, pictures, rarekooks, old china and works of art2 An auction is usually advertised beforehand with full particulars of the articles to besold; and where and when they can be viewed by prospective buyers. TI the advertisementcannot give full details, catalogues are printed, and each group of goods to be sold together,called a "lot", is usually given a number. The auctioneer need not begin with Lot 1 andcontinue in numerical order; he may wait until he registers the fact that certain dealers are inthe rocm and then produces the lots they are likely to be interested in. The auctioneer'sservices are paid for in the form. of a percentage of the price the goodsare sold for. Theauctioneer therefore has a direct interest in pushing up the bidding as high as possible3 The auctioneer must know fairly accurately the current market values of the goodshe is selling, and he should be acquainted with regular buyers of such goods. Fe will notwaste time by starting the bidding too low. He will also play on the rival among his buyersand succeed in getting a high price by encouraging two business competitors to bid againsteach other. It is largely in his advice that a seller will fix a "reserved" price, that is, a pricebelow which the goods cannot be sold. Even the best auctioneers, however, find it difficultto stop a 'knock-out", whereby dealers illegally arranged themselves as the only bidder, inthe hope of buying goods at extremely low prices. If such a "knock-out" comes off, the realauction sale takes place privately afterwards among the dealersQuestions31-35:31. What are auctinns?32. What are the goods which can be sold by auction? (Name at least three)33. Mhat is a "lot"?34. How are the auctloneer, s services pa 记 for?35. What wifl happen if a "knock-out" is achieved?
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省辖分行向省分行营运管理部领用会计印章可采用（）方式。
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维生素D缺乏症的X线表现有（）