题目

07四川理综 72  ⑵甲同学设计了如图所示的电路测电源电动势E及电阻R1和R2阻值。实验器材有：待测电源E（不计内阻），待测电阻R1，待测电阻R2，电压表V（量程为1.5V，内阻很大），电阻箱R（0－99.99Ω），单刀单掷开关S1，单刀双掷开关S2，导线若干。 ①先测电阻R1的阻值。请将甲同学的操作补充完整：闭合S1，将S2切换到a，调节电阻箱，读出其示数r和对应的电压表示数Ul，保持电阻箱示数不变，                  ，读出电压表的示数U2。则电阻下面是Mary的笔友Amanda写给她的信，信中Amanda介绍了烤肉串的制作方法。仔细阅读短文，完成信息采集表格。答案写在答题卷对应题号位置上。Dear Mary, How’s it going? Things are fine here. I am very happy every day. Last week on the “Good Cook” on CCTV-2, I learn to make the kebabs(烤肉串). And I want to tell you how to do it. Before starting to cook, we should have some meat, vegetables and some sauce. Of course, we need tools(工具), too, like skewers(烤肉签)， the barbecue(烤肉架) and the charcoal(木炭). Now you can start! First, cut up some meat and vegetables and put them in a bowl with your favorite sauce. Mix them up. 20 minutes later, put the meat and vegetables on the skewers. Then put charcoal in the barbecue and light it. After that, put the kebabs on the barbecue and cook for 10 minutes to 15 minutes, turning them over from time to time. Finally, take the kebabs off the barbecue and enjoy them! I tried this recipe. It is really great! I hope you can try it later. Best wishes! Yours’ AmandaHow to make kebabsThings neededHow to do itIngredients: 小题1:_________1)Cut up the meat and vegetables, and put them in a bowl. Add some 小题2:______ and mix them up.2) Put the meat and vegetables on the skewers.3) Put the charcoal in the barbecue and 小题3:______.4) Put the kebabs on the barbecue to cook 10-15 minutes,小题4:______ from time to time.5) Take off the kebabs and you can enjoy them.Tools:Barbecue,小题5:________