题目内容
有关点的投影，说法错误的是（)。
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当投射线互相，并与投影面时，物体在影面上的投影叫正投影。
机械图样，一般都采用投影法绘制，它是机械制图的理论基础。
三视图是指主视图、俯视图和左视图，三视图之间的对应关系是不变的的。
Which speaker matches the following description? Fill in the gaps with A-E.1. Speaker _______________ will see people dressed in amazing costumes.2. Speaker _______________ is going to decorate the venue with Chinese lanterns and projections on the wall.3. Speaker _______________ is worried about someone on Facebook spoiling the surprise.4. Speaker _______________ is going to be careful of people stealing things.5. Speaker _______________ is going to listen to old-fashioned music played on an old-fashioned machine.6. Speaker _______________ is in one of the bands that are playing.7. Speaker _______________ is going to taste food from all over the world.8. Speaker _______________ is going to celebrate with the whole family.9. Speaker _______________ is organising a party for her two best friends.10. Speaker _______________ is going to make sure there is no traffic on her street,
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