【简答题】You have to organize an urgent meeting at 9 a.m. tomorrow with all the staff from your department. Write an e-mail to the staff: saying when the meeting will begin telling them where the meeting will ...
【判断题】当空间平面或直线平行于投影面时,将它们向投影面进行正投影,那么平面的投影将反映平面的真实形状,直线的投影反映该直线的真实长度。
【单选题】直线平行于投影面的投影的长度 ____ 直线实际长度
【判断题】The longer the meeting preparation time, the more productive the meeting will be.
【简答题】When will the meeting be held? The meeting will be held at on (Thursday).
【单选题】直线平行于投影面,其投影的长度____直线实际长度
【简答题】PART One Question 46 ●You have to organize an urgent meeting at 9 a.m. tomorrow with all the staff from your department. ●Write an email to the staff: Saying when the meeting will be Telling them whe...
【单选题】直线平行于投影面时,其投影长度和实际长度的关系是
【单选题】直线的正投影基本性质,错误的说法是()。
C.
直线倾斜于投影面,其投影仍是一直线,但长度缩短