问题
问答题 论述题
怎样避免脱碳？
答案
参考答案：加热温度不要过高，时间不易太长，尤其是易脱碳的钢，要在预热阶段时间长一些，在加热阶段采取快速加热减少脱碳量。
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怎样避免脱碳？
参考答案：加热温度不要过高，时间不易太长，尤其是易脱碳的钢，要在预热阶段时间长一些，在加热阶段采取快速加热减少脱碳量。
| 读表格，据其内容完成下面句子 | |||||||||||||||
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| 1. In the USA, when you meet someone, you're supposed to , while in Japan you're supposed to_ . | |||||||||||||||
| 2. In the USA, when you eat noodles, you're supposed to _ , while in Japan you're supposed to . | |||||||||||||||
| 3. In the USA, when you are invited to a party, you're supposed to , while in Japan you're supposed to . | |||||||||||||||
| 4. In the USA, when you want to visit friends, you're supposed to_ , while in Japan you're supposed to . |