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【判断题】
在投影中,离中央子午线越远,则变形越小
A.
正确
B.
错误
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举一反三
【单选题】When impurity atoms replace the host atoms, it is called a/an_______solid solution.
A.
Substitutional
B.
Vacancy
C.
Interstitial
【单选题】When impurity atoms replace the host atoms, it is called a/an solid solution
A.
Substitutional
B.
Vacancy
C.
Interstitial
D.
NO
【判断题】Substitutional solid solution是指间隙固溶体。
A.
正确
B.
错误
【判断题】Steelmaking is made possible because ofthe formation of a substitutional solid solution.
A.
正确
B.
错误
【简答题】机翼是产生升力和阻力的主要部件,其几何外形可以从机翼平面形状和________两个方面来描述。
【单选题】用硬质合金高速切削时,若必须使用切削液,则应在()就连续,充分地浇注。
A.
切削前
B.
切削时
C.
完工后
D.
任一时刻
【单选题】注入或放出溶液后,需静置多久在才能读数
A.
立即
B.
1-2min
C.
5-10min
【多选题】The forming conditions for a substitutional solid solution are that the host atoms and the impurity atoms have________.
A.
Similar atomic sizes
B.
Similar Electron configurations
C.
Similar crystal lattice structure
D.
Same polarity
【单选题】Interstitial solid solution belongs to .
A.
infinite solid solution
B.
finite solid solution
C.
unhomogeneous solid solution
D.
substitutional solid solution
【单选题】单选When impurity atoms replace the host atoms, it is called a/an solid solutionA.Substitutional
A.
 Substitutional
B.
Vacancy
C.
Interstitial
D.
None of the avove
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