Dislocation is belonging to（）
A. Body Defects
B. Planar Defects
C. Line Defects
D. Point Defects
查看答案
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
What does summit of Kilimanjaro represent in the story（）
A. It is considered the place closest to God
B. It is named the House of God
C. It is seen as a place of spiritual transcendence
D. It is a sacred place
Which of following statement best describes the relatedness of the gangrene and the loss of Harry’s creativity（）
A. They both develop slowly and painless, thus catch him unaware
B. They are both deadly
C. They both cost him his vitality
D. They both affect his life
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