10.1 The fracture appearances of ductile and brittle failure are
A. ductile-flat, brittle-cup-cone
B. ductile-flat, brittle-flat
C. ductile-cup-cone, brittle-cup-cone
D. ductile-cup-cone, brittle-flat
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10.2 The existance of a crack results in locally intensified stresses which diminish with the decrease of distance
A. 对
B. 错
10.3 Both brittle and ductile fractures are dependent on Temperature.
A. 对
B. 错
IB、IIB族元素中熔点和沸点最高的是（）
A. 金
B. 铜
C. 镉
D. 汞
IB、IIB族元素中熔点和沸点最低的是（）
A. 铜
B. 金
C. 锌
D. 汞
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