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装配前的准备工作主要包括零件的清理和清洗、零件的密封性实验及旋转件的平衡工作实验等A.
正确
B.
错误
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【单选题】---When are we going to see the movie ZooTopia, this afternoon or tonight?---______ is OK. I'm free today.
A.
Both
B.
All
C.
Either
D.
Neither
【简答题】Over time, with the population grew, people began cutting food into small pieces 6 it would cook more quickly.
【单选题】听力原文：Let's work on the project tonight. (A) I walk there every night. (B) O.K., I'm free after 6:30. (C) I can't go to the gym tonight. (10)
A.
B.
C.
【简答题】I'm free tonight.
【简答题】若有 100 名学生,每个学生有学号、姓名、平均成绩,学生表中学生一般不变,即:很少涉及插入、删除等操作,请问采用什么样的数据结构最方便?写出数据结构。
【简答题】Over time, ________ the population grew, people began cutting food into small pieces so it would cook more quickly.
【单选题】---When are we going to see the movie Zootopia, this afternoon or tonight? --- ____ is OK. I'm free today.
A.
Either
B.
Neither
C.
Both
D.
All
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