If there was absolutely no way for a maggot to get into the room, and no maggots or maggot eggs anywhere in the room or on your person, then there is no way for your body to become infested with maggots. Maggots are a living creature and they can't appear out of thin air, they have to come from somewhere.
Maggots are produced by flies, not by dead bodies. Whether maggots would appear will depend on whether flies land on the body. If the room is merely concealed (i.e. hidden) there's nothing to stop flies getting in. If you mean a sealed, airtight room then maggots would not appear.
No, you probably had some sort of grain pest in the rice and you are seeing the larval stage.
Yes! Although a room may appear clean on it's surface that does not necessarily mean it is "clean" in the sanitary aspect of the word.
Divisão. Depending on what particular room you're refering to, there the words are completely different. The geral word would be Divisão.
There are different medications, both prescribed and over the counter that can be used to treat worm infestations. In humans, threadworm can be cured by taking a single pill. With animals, wormers can be bought at most shops, although if it is a serious infestation, it is worth taking the animal to a veterinary clinic since some forms such as heartworm can be fatal.
completely
The same temp as the room it was placed in
Yes, you can see yourself in a mirror in a completely dark room if your eyes have adjusted to the light yet.
The best temperature range for storing dry good would be 50°F to 70°F (10°C to 21°C).
The closest I could find pertained to Public Housing and meant Decent, Safe, Sanitary -- I'm presuming anglo-speak.
Do not drink and then enter a steam room, the alcohol can deaden the sense for letting you know when your too hot. Also do not stay in for long periods of time, too long can trigger health problems. Also be sanitary, public steam rooms are not somewhere to sit naked, due to bacteria.
Not unless you have a definition of "completely dark" that means something other than completely dark (i.e. no light whatsoever).