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【单选题】
关于尺寸公差,下列说法中正确的是 ( )
A.
尺寸公差只能大于零,故公差值前应标“+”号
B.
尺寸公差是用绝对值定义的,没有正、负
C.
尺寸公差不能为负值,但可以为零
D.
尺寸公差为允许尺寸变动范围的界限值
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举一反三
【单选题】The books are easily ___________  to the readers as all the shelves are open.
A.
relevant
B.
accessible
C.
acceptable
D.
sensitive
【单选题】---Wow, so many books here! How can you find the one you need? ---That’s easy. The books are according to subject.
A.
judged
B.
associated
C.
classified
D.
obtained
【判断题】事物是UML模型中面向对象基本的模块,它们在模型中属于动态部分。
A.
正确
B.
错误
【单选题】—Wow, so many books here! How can you find the one I need? —Yhat’s easy.The books are _____ by subject.
A.
djudged
B.
remarked
C.
classified
D.
furnished
【判断题】事物是UML模型中面向对象基本的模块,它们在模型中属于动态部分。( )
A.
正确
B.
错误
【简答题】The books are in the_________
【简答题】阅读理解。 This is my room.The books are in the bookcase.The picture of my family is on the wall.  My backpack is on the chair. And I have a baseball. It's on the floor, between the bookcase and the desk. ...
【简答题】A.Pay for the lost books. B.Check if the books are still at her home. C.Check if the books are at Henzer's place. D.Reconfirm whether the books were returned.
【简答题】句型转换。 1. Both of the books are very interesting.  (改为同义句) The books______ ______very interesting. 2. The school uniform is mine .(就画线部分提问) ______ ______ the school uniform? 3. The boy is bad at math.(...
【判断题】事物是 UML 模型中面向对象基本的模块,它们在模型中属于动态部分。( )
A.
正确
B.
错误
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