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【单选题】
在固体材料中，质点扩散的微观机制以（ ）为主。A.
空位机制
B.
间隙机制
C.
亚间隙机制
D.
直接易位机制
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举一反三
【单选题】I’m no painter, and to me, one painting is much like .
A.
the other
B.
others
C.
another
D.
one
【单选题】I'm sorry, but I'm too busy to help you now. I can only do one thing . [ ]
A.
at one time
B.
at a time
C.
at time
D.
at the time
【单选题】— What class are you in? — I'm in _________. [ ]
A.
Grade One
B.
One Class
C.
Class One
【单选题】I’m in __________. What about you?
A.
Class One
B.
One Class
C.
class one
D.
one class
相关题目：
【单选题】I’m no painter, and to me, one painting is much like .
A.
the other
B.
others
C.
another
D.
one
参考解析：
知识点：
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