①雄赳赳、气昂昂，跨过鸭绿江

②还我山东，还我青岛

③打倒蒋介石，解放全中国

④稻谷堆得圆又圆，社员堆稻上了天。撕片白云擦擦汗，凑上太空吸袋烟

试推断：

下面是对文章的理解和分析，不正确的一项是（    ）。

①该车获得的牵引力为____N

②电动机的内阻为____Ω

Dear David,

    I'm very glad you are arriving in my city at 3:00 p.m. this Sunday. Now let me tell you the way to the Blue Sky Restaurant. I'll meet you there. Take a taxi from the bus station and go down New Bridge Avenue. Go across the big bridge. When you see a bank, turn right and go through Bank Street. You'll pass three one-way avenues: Sixth Avenue, Seventh Avenue and Eighth Avenue. When you see a big McDonald's, turn left. Then go along Green Avenue until（直到）you see New Park. Turn left and go down Center Street. The Blue Sky Restaurant is on your right.

    I hope you have a good trip.

Yours,

Larry