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【判断题】
确定表面粗糙度时，通常可在二项幅度特性方面的参数中选取。()A.
正确
B.
错误
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皮皮学刷刷变学霸
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【简答题】大气污染的种类及主要来源有哪些?
【单选题】听力原文：W: Goodbye, John. And please send my regards to your parents. M: Sure I will. Thank you very much. Bye. What did the woman ask the man to do?
A.
To give her some presents.
B.
To give her his parents.
C.
To give her best wishes to his parents.
【单选题】---Please send my best wishes to your family. ---______!
A.
You too
B.
Thank you
C.
Me too
D.
The same to you
【单选题】听力原文：W: Goodbye, John. And please send my regards to your parents. M: Sure I will. Thank you very much. Bye. What did the woman ask the man to do?
A.
To give her some presents.
B.
To give some presents to his parents.
C.
To give her best wishes to his parents.
【单选题】Please send ______ my best wishes when you go to visit your grandparents.
A.
their
B.
they
C.
them
D.
theirs
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