题目

Experience the Colorado River the Hualapai Way! River Runners offers the ONLY One Day Whitewater trip ANYWHERE at the GRAND CANYON!     Since 1973, Hualapai River Runners has been conducting whitewater rafting (漂流) journeys on the Colorado River. Our experienced guides expertly sail along the river and share the history of the Canyon and the Hualapai people with you. Visitors experience the excitement of whitewater rapids and then stop to enjoy the impressive beauty of Travertine Falls and a tasty lunch. No charge for children 2 years and under. One-Day Trip Retail  $249.00�最近，英国利物浦大学公布了一项利用新能源的研究成果：在风力发电机风车叶片上加装太阳能板，可以同时利用风能和太阳能．（1）这种装置可以同时将 能和太阳能转化成电能．如果将其与蓄电池相连，便能把电能储存起来．蓄电池在储存电能的过程中，是将电能转化成 能．（2）将该蓄电池（U=12V），按如图电路，给“12V  8W”的节能灯L1和“12V  5W”的彩灯L2供电，则节能灯L1的电阻为多少？彩灯L2每分钟消耗的电能为多少？（3）李明想利用该装置给家中的楼道灯和室外彩灯设计一个自动控制电路．提供的器材：蓄电池U、光控开关S1（白天断开，晚上接通）、声控开关S2（发声或有人经过时接通，安静环境断开）、楼道灯L1、室外彩灯L2．要求：楼道灯L1只在晚上有人发声时才开灯，彩灯L2只在晚上一直接通．请你根据提供的器材，按设计要求，画出自动控制电路，并在各元件旁标上相应的字母代号．