①保护耕地②节约用水③提高煤炭、油气等常规能源的利用效率④用太阳能、风能等新能源完全替代常规能源
电工师傅常用一只额定电压为220V的灯泡L0(检验灯泡)取代保险丝来检查新安装的照明电路中每个支路的情况,如图所示.当S闭合后,再分别闭合S1、S2、S3(每次只能闭合其中之一)时,可能出现以下三种情况,试判断(选填:“短路”、“断路”或“正常”):
(1)L0不亮,说明该支路 .
(2)L0正常发光,说明该支路 .
(3)L0发光呈暗红色,说明该支路



Active Challenge
Weight loss camp for girls aged 13—18in Canada
Location: Beautiful Bear Creek Outdoor Center Near Ottawa, Ontario
Season: July 2nd—August 28th
Capacity: 40 Activities include: hiking, rafting, canoeing, yoga, cooking, camp skills, mountain biking, nutrition classes, swimming, fitness classes etc.
Choose what you like!
Active Challenge is a weight loss program specially for young women. The burden of being overweight is heavier than just the extra pounds. We use outdoor adventures to challenge the girls, to give them something to draw strength from.
Because you'll be losing weight alongside young women just like you, you'll find no one laughing at you and you'll help each other. At Active Challenge you'll make lifelong friends with young women of your own age and learn to love new adventurous activities.
Unlike any other weight loss program, Active Challenge is designed so you'll lose weight and have the strategies and skills to keep the weight off forever. Active Challenge does not put you on a diet. We follow the Canada Food Guide to healthy eating and exercise appropriate portion control. We help you develop healthy habits.
The staff at Active Challenge combine experienced outdoor adventure professional with highly qualified clinicians. All of us are absolutely devoted to helping you achieve lasting behavioral change and weigh loss. Most of all we are devoted to having a great time doing it.
Pre—Camp: Upon registration in Active Challenge, a registration package will be sent out to you with forms to be completed before camping as well as program preparation materials, an introduction to Active Challenge and pre—program personal challenge assignments to get you on your way toward a healthier you.
Post—Camp: Our post program is designed to keep you focused and remind you of the goals that you set during the camp. We will send you home with your personal meal and exercise plan and keep in touch with you for a full three months after the camp ends through letters, emails and phone calls, tracking your progress and giving you strategies and support.
B . 硬度的大小:Mg>Ca>K
C . 熔点的高低:Na>Mg>Al
D . 晶格能的大小:NaF>NaCl>NaBr>Nal
利用你所学过的知识,请根据下图信息回答问题:
(1)锶属于元素(选填“金属”或“非金属”).
(2)锶元素的原子序数为 , 相对原子质量为 .
(3)如图2所表示的粒子的化学符号是 .
结合材料,分析该省在文化发展方面的措施是如何体现矛盾分析法的。
—I am drinking water with my trunk.
B .
C .
B .
C .
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