In space hotels, a large tube will be necessary for... 1. ...creating artificial gravity. 2. ...connecting the hotel to the landing area. 3. ...linking hotels with the Earth. 4. ...launching the rocket ships.

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In space hotels, a large tube will be necessary for... 1.  ...creating artificial gravity. 2.  ...connecting the hotel to the landing area. 3.  ...linking hotels with the Earth. 4.  ...launching the rocket ships.

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