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【简答题】
用所给词的适当形式填空。 1. At that moment I saw a dog _______(lie) on the floor. 2. At the beginning of the _______(twenty) century,the world's population was 1.7 billion. 3. The _______(shelf) in his study are full of science books. 4. Of all the lessons in Book Three, Lesson Five is the _______(little) interesting. 5. The dog's _______(die) made her very sad. 6. There _______(be) many changes over the years. 7. Who teaches _______(they) physics? 8. How _______(excited) it is to go roller skating here. 9. Most of the students work hard _______(get) high marks in exams. 10. We can live _______(comfortable) in Taizhou because it's a good place.
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皮皮学刷刷变学霸
举一反三
【多选题】关于热加工、阅读下面的陈述并选择所有正确的陈述。
A.
碳/钨电极只能用于光亮的裸金属表面。
B.
碳/钨电极不适合用于对铝面板进行热缩操作。
C.
当使用碳/钨电极完成热缩时，需要一块裸金属进行铅还原。
D.
在热缩过程中，必须小心，不要将水洒到车间地板上。应立即清洁任何洒落的水。