（2分） HYPERLINK "https://www.cqooc.com/learn/mooc/exam/http:" 城市急救半径是 <img src="//up.zaixiankaoshi.com/img/067ed2b029e74985fb492b181bfca90a/word/media/image1.wmf"/> ≤3km <img src="//up.zaixiankaoshi.com/img/067ed2b029e74985fb492b181bfca90a/word/media/image1.wmf"/>≤5km <img src="//up.zaixiankaoshi.com/img/067ed2b029e74985fb492b181bfca90a/word/media/image1.wmf"/> 8～10 km <img src="//up.zaixiankaoshi.com/img/067ed2b029e74985fb492b181bfca90a/word/media/image1.wmf"/>10～15km <img src="//up.zaixiankaoshi.com/img/067ed2b029e74985fb492b181bfca90a/word/media/image1.wmf"/>15～20km 得分:<img src="//up.zaixiankaoshi.com/img/067ed2b029e74985fb492b181bfca90a/word/media/image8.wmf"/> 总分：2分 答案解析：-