题目

The city of San Francisco is a wonderful tourist attraction that offers many different things to see and do. The best way for a traveler to get a good look at the city is to take one of the many different tours there.Tour the City on FootWhen touring the city by walking, you aren’t going to walk much. What’s more, there are far more benefits. This kind of tour allows you to see as many buildings of the city as possible. A tour of the city on foot usually focuses on a more localized neighborhood level, which can be very interesting in a number of different ways.Hit the Waters of San Francis如图所示的电路中，灯泡A1、A2的规格完全相同，自感线圈L的电阻可以忽略，下列说法中正确的是（　　）A、当接通电路时，A2先亮，A1后亮，最后A2比A1亮B、当接通电路时，A1和A2始终一样亮C、当断开电路时，A1和A2都过一会儿熄灭D、当断开电路时，A2立即熄灭，A1过一会儿熄灭