从古希腊第一届奥林匹克运动后开始，到最后一届古希腊奥林匹克运动会结束，如果不考虑其他停止的情况，古希腊奥林匹克运动会共举行了

有史家认为：从秦汉起，官僚体制就是中国制度的核心问题，而这个核心问题又可以分成两个大的子问题，一是官僚的选拔问题，二是官僚体系内部的权力制衡。隋唐时期统治者解决“官僚体系内部的权力制衡”问题的重要举措是（　 　）

    What will you do if you have six million dollars? Different people give different answers.
    David I will buy an island if I have six million dollars. Then I will be the king of the island. I will invite my friends to my island and we’ll have a good time there.
    Cathy If I get six million dollars, I want to start my own business and I will do a lot of things for my family. For me, nothing is more important than my family. I will buy a new house for my parents and take them to travel around the world.
    Julie  If I have six million dollars, I will put five million in the bank and spend one million. I will visit Sydney, Toronto, Moscow and other interesting cities. I want to try different kinds of delicious food, and build a house with a swimming pool.
    Victor If I have six million dollars, I will use the money to do everything I like. I will use two million to open my own shop. And I will give another four million to schools and charities. I would like to help students in poor areas to get good education. I want everyone to live a happy life.

如图所示，电源电压保持不变，断开开关S₃，分别只闭 合开关S₁和只闭合开关S₂时电阻R₁和R₂两端的电压之比为4︰3，电阻R₃两端的电压之比为2︰3。只闭合开关S₂时 ，电阻R₃消耗的电功率为100W。求：

（1）只闭合开关S₁时，电阻R₁和R₃消耗的电功率之比。
（2）开关S₁、 S₂、S₃都闭合时，电路消耗的总电功率。