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参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】特征是具有一定形状的几何体,是构成复杂模型的基本几何模型。工具条 的各特征功能是通过( )产生的二维轮廓线创建特征。
A.
草图工作台
B.
零件设计工作台
C.
二维制图工作台
D.
装配工作台
【单选题】Passage 1 Together, the employer and the employees pay over a million dollars each year in state and local taxes. Together, they provide materials for about one-fourth of the automobiles produced in...
A.
he had enough working experience
B.
he did what Mr. Karson told him to do
C.
Mr. Karson was greatly impressed with his suit
D.
Mr. Karson was impressed with his willingness to work