问题 选择题

如图所示,线圈是由双股导线并绕成的,下列说法正确的是:

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A、螺线管内磁场方向向左

B、螺线管内磁场方向向右

C、螺线管内磁场为单股导线绕制时的两倍

D、螺线管内没有磁场

答案

答案:D

材料题

       1929年,由美国开始的经济危机,像恶魔一般袭击了世界主要资本主义国家。2008年,一场金融危机同样波及全球。据此回答下列问题:

(1)罗斯福是在什么背景下实行“新政”的?“新政”的主要措施有哪些?

                                                                                                                                                             

                                                                                                                                                            

                                                                                                                                                            

(2)我们应该怎样评价罗斯福新政?

                                                                                                                                                            

(3)结合罗斯福新政,你认为应该怎样应对当今世界金融危机?

                                                                                                                                                             

                                                                                                                                                             

多项选择题