发电机在运行中转子线圈产生的磁场，与定子磁场是（）的。

请仔细阅读以下五个段落，然后从A到F六个选项中选出和每个段落对应的内容。其中有一项多余。
请阅读以下五个人的信息，然后为他们选择最适合的一处地方：
小题1:Joe comes from Moscow. He has studied in Beijing for two years. So he misses his hometown very much. He hopes to go to a city where he can find the feeling of returning home.
小题2:Mary is an American girl. She likes going shopping. This year she’ll graduate from a famous Chinese college. So she is planning to travel to a city where she may find a job.
小题3:Henry is from Canada. He is interested in surfing and diving. But the city in which he is living is far from the sea. So he is expecting to get to a place where he can do these activities and taste bananas and pineapples.
小题4:Rosa comes from Britain. She cannot stand hot weather. And she thinks some Chinese cities have too much pollution. So she wants to go somewhere clean and peaceful.
小题5:Timmy comes from Japan. He has great interest in taking photos. He is looking forward to staying close to nature. He even wants to take a boat while taking photos. However, he doesn’t like hot food.

A		City: Lhasa Temperature in July:15-17℃ Attractions: blue sky, fresh air and wonderful dances
B		City: Harbin Temperature in July: 24-30℃ Attractions: some old buildings in Russian style
C		City: Chongqing Temperature in July: 28-30℃ Attractions: tall mountains, hot food and friendly people.
D		City: Hong Kong Temperature in July: 29-30℃ Attractions: nice and cheap clothes, all kinds of tasty food and chances to find good jobs.
E		City: Guilin Temperature in July: 29-30℃ Attractions: fantastic hills, clean rivers and many other natural sights.
F		City: Sanya Temperature in July: 27-32℃ Attractions: exciting water sports, lovely beaches and great tropical fruit.