7.Among the following properties,temperatures have the greatest effect on A)ductility B)impact strength hardness D)strength 8 Which term describes well-defined methods for solving specific problems,such as those used to develop an approach to materials selection? A) D sign CIM thm 0 Wsction usul dointhechoice A)P B) C)Processibility D)Cost 10.Four quantum numbers characterize an electron as to its size.shape,and spatial orientation.The number of energy states for each orbital is determined by A)The principal quantum number B)The second quantum number C)The third quantum number D)The fourth quantum number 11.Which stage of the materials cycle is the most difficult for manufacturers to develop a full materials cycle? Extracting raw materials Manutacturing engineered materials D) of prod d sys Recycling/dispos materla 12.The maximum number of electrons in the N energy level is A)2 B)8 C18 D)32 6 is a dynamic testing A)Hardness test B)Impacttest C)Tensile test D)Tensile creep test 14.Brinell hardness numbers are a measure of the size of the penetration made by with different loads 10-mm steel bal amon pyramid inden D d cone inder tungsten carbide sphere 第3而第 3 页 7. Among the following properties, temperatures have the greatest effect on ________. A) ductility B) impact strength C) hardness D) strength 8. Which term describes well-defined methods for solving specific problems, such as those used to develop an approach to materials selection? A) JIT B) Design C) Algorithm D) CIM 9. What factor in materials selection usually dominates the final choice? A) Properties of materials B) Availability C) Processibility D) Cost 10. Four quantum numbers characterize an electron as to its size, shape, and spatial orientation. The number of energy states for each orbital is determined by ________. A) The principal quantum number B) The second quantum number C) The third quantum number D) The fourth quantum number 11. Which stage of the materials cycle is the most difficult for manufacturers to develop a full materials cycle? A) Extracting raw materials B) Manufacturing engineered materials C) Service of products and systems D) Recycling/disposal materials 12. The maximum number of electrons in the N energy level is ____________. A) 2 B) 8 C) 18 D) 32 13.___________ is a dynamic testing. A) Hardness test B) Impact test C) Tensile test D) Tensile creep test 14. Brinell hardness numbers are a measure of the size of the penetration made by ______ with different loads. A) 10-mm steel ball B) diamond pyramid indentor C) diamond cone indentor D) tungsten carbide sphere