A:冬季严寒,夏季凉爽
B:年降水量在800毫米以下
C:多为水田,种植水稻
D:耕作制度一年一熟或一年两熟
晶体硅是一种重要的非金属材料,制备纯硅的主要步骤如下:
①高温下用碳还原二氧化硅制得粗硅
②粗硅与干燥HCl气体反应制得SiHCl3:Si+3HClSiHCl3+H2
③SiHCl3与过量H2在1100℃反应制得纯硅,已知SiHCl3能与H2O强烈反应,在空气中易自燃.
请回答下列问题:
阅读下面的短文,根据短文内容完成相关任务。Hi! Welcome to Lotte Mart.(乐天玛特)We have clothes at very good price(价格 ).We have sweaters in all colors at ¥ 16 each. Are they very cheap? And we have black trousers for only ¥9. We have blue bags for sports for just ¥7 for girls. T-shirts in all colours are ¥10 each. The white socks are only¥3. Can you believe it? Come and see in our supermarket.Please fill in the table according to the advertisement(广告 )for the clothes.