以下图中平面三角形三视图投影画法正确的是（）。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201811/f3c7dab3a74d4809b15163012a32f219.png
举一反三
- 根据立体图，画法正确的三视图是（）。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201811/285dfe434ee2438596d8790400d06723.png
- 下图中内螺纹俯视图画法正确的是（ ）。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201811/ef80947e2fd04a6bb320a9cf71b71644.png
- 三棱柱表面点 A 的三面投影正确的是（ ）。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201811/a69108506dfb41ce8f9bb0ee14e3e3a1.png
- 下列主、俯视图中，主视图画法正确的是（ ）。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201811/8b4060191a0d4179952058f160d381df.png
- 选择棱锥被正垂面截切后正确的左视图。 A: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201811/6f582ca8c21a4113a4470da4dc266075.png" /> B: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201811/65ae2f577aa14584ae75cc84ab3050c1.png" /> C: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201811/089db3476a0145e19cb4b135eb0437db.png" /> D: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201811/e60c72d724f74552963c93af681ca44d.png" />