①决定消费方式，提升消费的质量和水平

②倡导循环经济理念，提升公众环保意识

③创造消费动力，引导产业结构不断升级

④创新商品价值实现方式，促进绿色消费

如图所示为某兴趣小组为学校办公楼空调设计的自动控制装置，R是热敏电阻，其阻值随温度变化关系如下表所示．已知继电器的线圈电阻R₀=15Ω，左边电源电压为6V恒定不变．当继电器线圈中的电流大于或等于15mA时，继电器的衔铁被吸合，右边的空调电路正常工作．

（1）请简要说明该自动控制装置的工作原理．

（2）计算说明该空调的启动温度是多少？

（3）为了节省电能，将空调启动温度设定为25℃，控制电路中需要再串联多大的电阻？

（4）改变控制电路的电阻可以给空调设定不同的启动温度，除此之外，请你再提出一种方便可行的调节方案．

新疆瓜果特别甜的主要原因是（   ）

字谜利用汉字的造字规律或形、音、义某一方面的特点来编写，集趣味性、知识性于一体。例如：皇帝新衣（打一字），谜底是“袭”，皇帝被称为“真龙天子”，“龙”“衣”组成“袭”字。

请写出“孔子登山（打一字）”的谜底：____。

     May 10th is Meg’s birthday. She gets a gift from her sister. It is a new coat .The coat is very beautiful and she feels very happy.

     One day, Meg finds that a button(纽 扣) of her coat is lost. She looks for the button everywhere, but she can’t find it. The next day, she doesn’t wear that coat to school and feels sad all day. After school, she goes to the clothes shops and wants to buy that kind of clothes. But she doesn’t find it. She feels very disappointed.

     Meg tells her sister about that, and her sister says, “We can change all the buttons. Then the buttons will be the same.” The coat is beau  tiful again and Meg feels happy again.