The lattice of solid solution is the same as（）
A. solution
B. solvent
C. solute
D. solute or solvent
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Grain boundaries are belonging to（）
A. Body Defects
B. Planar Defects
C. Line Defects
D. Point Defects
Dislocation is belonging to（）
A. Body Defects
B. Planar Defects
C. Line Defects
D. Point Defects
According to the geometrical shape, crystal lattice imperfections are classified（）
A. Point Defects
B. Line Defects
C. Planar Defects
D. none of them
The property that describes a metal’s ability to resist surface wear and abrasion is（）
A. Fatigue strength
B. Hardness
C. Toughness
D. Tensile strength
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