单项选择题
A.属性值得可见性B.默认属性值C.单一的块参照属性值D.属性图层
A.对象捕捉B.对象捕捉追踪C.对象捕捉和对象捕捉追踪D.对象捕捉和极轴追踪
A.X =113.3233、Y =242.5747B.X =79.7336、Y =145.0233C.X =90.7940、Y =177.1448D.X =68.2647、Y =111.7149