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Anonymous users2024-01-24There are three possible devices in the appearance of a round box:
Kind of is a lamp, this is a good judgment. (Recognize it when you switch it).
The second type is smoke detectors. (The exterior is divided into two layers.) Obviously, there is an indicator light on it, but it may not be on) This is a mandatory installation on the fire department. When the smoke reaches a certain concentration, an alarm will be given.
The third is the signal amplifier of the mobile phone or the WIFI signal amplifier (the appearance is a bit like an upside-down hat), which is used to amplify the signal of the mobile phone or WIFI.
The seven-day chain hotel economy should have a bathroom, and the general chain hotel conditions are OK. The price usually ranges from 100 to a few hundred. If there is a special room, it is the one without windows, which may be less than a hundred.
To put it simply, it is the grounding wire, as long as the wire is connected, it is generally fine, and it can be sealed with bricks. >>>More
It is best to use a tiled floor, which is both fireproof and easy to clean. There are no rules on what type of door to use in the bathroom, but for fire prevention, it is better to use aluminum alloy. The key fire protection setting is not the trivial things such as floors and door panels, but the setting up of reasonable smoke alarm devices, sprinkler equipment, necessary gas masks, fire extinguishers and other preliminary fire extinguishing tools, and unobstructed fire escape routes.
If it is significantly slower than the adjacent room or the same floor, it may be that the hot water pipe in that part is blocked or flattened, so that the hot water flow is low. It is also possible that the room with slow hot water is the farthest away from the pressurized pump, and the water pressure is too low. It is recommended to find the company that installed it at that time to come and inspect it on site.
Generally, D stands for tripping curve, which is used in equipment with high impulse current such as transformers, and D-type tripping is generally not used indoors. >>>More