题目内容

车架加工工艺中,抛丸工序的作用是

A. 消除装配中的应力
B. 除掉浮锈、焊渣及油污
C. 提高油漆附着力
D. 提高螺纹连接强度

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对车架油漆的要求,包括

A. 无露底及针孔
B. 漆膜厚度>20um
C. 漆膜外观无流挂
D. 无明显色差

成型纵梁的主要技术要求正确的是

A. 长度偏差正公差不超过5mm
B. 幅面纵向直线度公差不超过全长的0.4%,每1米内的偏差不大于2mm
C. 翼面纵向直线度公差不超过全长的0.1%
D. 纵梁内侧圆角半径R的偏差为±2mm

从连接类型、预紧力等方面对比分析铆接与螺纹连接？

[音频]Audrey Hepburn was born in Brussels, Belgium, on May 4, 1929. Although she was the daughter of a Dutch baroness (女男爵) and a wealthy English banker, Audrey had a difficult childhood. Her parents when she was young and Audrey went to live with her mother in the Netherlands. Soon after, the German army Holland. During the Nazi occupation, her family faced starvation and Audrey ____ severe anemia (贫血), and respiratory problems.