在工程制图中选用规定的线型绘图,细点划线用于()的绘制
A. 不可见轮廓
B. 可见轮廓
C. 轴线
D. 尺寸线
主视图反映了物体()的位置关系
A. 上下、前后
B. 上下、左右
C. 前后、左右
D. 上下、任意
共用体类型的声明与结构体类型声明方法相同,但含义不同。
A. 对
B. 错
Read this blog entry. Then, choose the correct answers.1 What is the blog mainly about? ()A how an ancient building was constructedB why shapes are important to architectsC why students learn about geometric shapesD which shapes provide the best support2 A column is an example of a(n) ()A cylinderB ovalC squareD arch3 Which shape is NOT used in the Coliseum? ()A a semicircleB an ovalC a rectangleD a circle