相关文档

• 121_试卷试题.doc

  Text 1Alloy steels contain significant amounts of alloying elements Structural-grade alloy steels, as identified by ASYM specifications，are used mainly in the construction and transportation Industr

• 121_试卷试题(1).doc

  Text 1The selection of a cutting fluid should also include considerations such as its potential effect on workpiece material and machine tools, biological factors, and environmental factorsBiologica

• 121_试卷.doc

  Text 1Alloy steels contain significant amounts of alloying elements Structural-grade alloy steels, as identified by ASYM specifications，are used mainly in the construction and transportation Industr

• 129_试卷试题.doc

  Text 1Metals are found everywhere in our life They are classified into two categories, “ferrous” and “non-ferrous” metals Ferrous means relating to, or containing iron and non-ferrous means having n

• 112_试卷试题(2).doc

  Text 1Many metallic and nonmetallic materials can be machined without a cutting fluid, but in most cases, the application of a cutting fluid can improve the operation significantly Appropriate to va

• 124_试卷试题(1).doc

  Text 1A mill is versatile machine tool which is useful for machining the rough surface of a work piece flat and smooth and for shaping them with slots, and holes The work piece is held by a vise on

• 129_试卷试题(1).doc

  Text 1The marketing department conducts market research and advertises, packages, sells, and distributes the product Market researchers do surveys to see what consumers want, if they like their prod

• 111_试卷试题(1).doc

  Text 1The selection of a cutting fluid should also include considerations such as its potential effect on workpiece material and machine tools, biological factors, and environmental factorsBiologica

• 127_试卷试题(2).doc

  Text 1Alloy steels contain significant amounts of alloying elements Structural-grade alloy steels, as identified by ASYM specifications，are used mainly in the construction and transportation Industr

• 111_试卷试题(2).doc

  Text 1Metals are found everywhere in our life They are classified into two categories, “ferrous” and “non-ferrous” metals Ferrous means relating to, or containing iron and non-ferrous means having n