单选题 A“critical crack length”is associated with

单选题 A“ductile”material has a relatively high value of

单选题 Creep deformation failure is a concern

单选题 Charpy and Izod are names associated with equipment used to measure

单选题 A creep resistant material should have

单选题 A“stiff”material has a relatively high value of

单选题 A“strong”material has a relatively high value of

单选题 A material has a melting point of 200 degrees Celsius, and we apply constant force loads at 20 degrees Celsius.