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Part Ⅱ Read the following passage carefully and then fill in

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Part Ⅱ Read the following passage carefully and then fill in each blank with one suitable word or expression selected from the list.(15 points)
requisite render identify unlikely over
apart create safety ultimate exceed
deform permanently apply evaluation strength
The concept of__________factors is normally__________to the__________ and consideration of__________of materials used in a design.Safety factors are normally applied to the yield strength of a material but can be applied to the__________tensile strength.The yield stress is the stress above which the material will__________ __________ .Having__________the yield stress or yield strength,materials begin to creep.That is,dislocations will be__________,and application of a load to continue the stress above yield will allow the material to slip.__________time,it may slip enough to simply come __________.So if a material is used in a service environment in which the yield stress is never exceeded,it is__________it will fail by being over stressed.On the other hand,large safety factors could__________a design unworkable because no material be__________with the__________strengths.
Part Ⅱ Read the following passage carefully and then fill in
safety
applied
evaluation
strength
requisite
deform
permanently
exceeded
identified
Over
apart
unlikely
render
created
ultimate