常用的塑性判断依据是( )。
A: Elongation after fracture and section shrinkage
B: Plastic and toughness
C: Section shrinkage and plasticity
D: Thermal expansion
A: Elongation after fracture and section shrinkage
B: Plastic and toughness
C: Section shrinkage and plasticity
D: Thermal expansion
举一反三
- 坯体烧结后,在宏观上会出现哪些典型变化:() A: Volume<br/>Shrinkage B: Densification C: Strength<br/>Enhancement D: Toughness<br/>Improvement
- To avoid cracking of the casting, there should be ____________ for shrinkage during solidification
- Which section best explains why Sam 's asking so many questions in Section C? A: Section B B: Section D C: Section G D: Section I
- Temporary and Preliminary Notices are placed at the end of ___ of Admiralty Notices to Mariners. A: Section Ⅰ B: Section Ⅱ C: Section Ⅲ D: Section VI
- The section where the bending moment diagram has abrupt change is: () A: Section with concentrated load B: Section with zero shear force C: Section with zero load D: Section with concentrated couple