问题
问答题 简答题
我国按经差6°或3°是如何进行分带投影的？
答案
参考答案：
我国规定1∶2.5万、1∶5万、1∶10万、1∶25万、1∶50万采用6°分带投影，从0°子午线起，自西向东每隔经差6°分成一带，全球共60带。（13~23）
我国规定1∶1万采用3°分带投影，从E1°30′子午线起，每隔经差3°分成一带，全球共120带。（25~45）
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我国按经差6°或3°是如何进行分带投影的？
参考答案：
我国规定1∶2.5万、1∶5万、1∶10万、1∶25万、1∶50万采用6°分带投影，从0°子午线起，自西向东每隔经差6°分成一带，全球共60带。（13~23）
我国规定1∶1万采用3°分带投影，从E1°30′子午线起，每隔经差3°分成一带，全球共120带。（25~45）
| 综合填空：用方框中所给单词的适当形式填空，使短文完整、通顺。（每次限用一次） | |
A racing bike? A car? No, it's a special (1)_______ of shoe called Heelys (暴走鞋). Heelys look just like common (2)_______ shoes, but they have a wheel hidden in the heel (鞋跟). So instead of (3)_______, kids can "fly" around in them. "Wearing Heelys is fun and (4)______," said Wu Peng, a boy who wore them on his (5)______ day back at No. 6 Middle School in Beijing. Wu Peng said he loves the shoes so much that he wears them wherever he goes. Sometimes he even (6)_______ his parents' car to the supermarket on his Heelys! Other students think these are very cool, (7)_______ some haven't been so lucky with their Heelys. It's reported that some (8)_______ have fallen down while using these shoes, and some have been hurt. "Heelys wheels are on the heels of the shoes, so it's (9)_______ to fall," said Liu Rui, a doctor at the Hong Kong International Medical Clinic, Beijing. Even (10)______, Liu said, "Wearing Heelys for a long time could stop young people from developing their ankles (脚踝) and legs." |
