制图的准备工作包括哪几部分?
参考答案:
①制作室的光线从左前方照射并充足柔和。
②准备好工具用品并擦试干净。
③固定好图纸。
Please don’t make so loud noise.The news of the volcanic eruption in Indonesia ____and I want to listen.
A.is broadcast
B.is being broadcast
C.has been broadcast
D.had been broadcast
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