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Anonymous users2024-01-24This question examines the relationship between flow velocity and pressure.
Where the flow velocity is large, the pressure is small.
Therefore, B is selected for this question
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Anonymous users2024-01-23I guess it's D.
According to the person in charge of an exhaust fan sales office, there are three types of household exhaust fans on the market: ceiling type, wall-mounted type and window type. Zhengye GENUIN, BNN-LONON, Panasonic Panasonic, Midea Midea, Jinling These are the top 10 brand portals to buy the exhaust fan industry brand list introduction, you can go to understand, or buy a better brand.
Installation method: 1. The exhaust fan installed on the aluminum gusset ceiling is equipped with metal fasteners matching the ceiling keel, which can be installed directly; 2. Installed on the outer wall of the bathroom, the hole should be opened in the wall first, and the hole diameter should be determined according to the size of the exhaust fan. 3. Installed on the wall of the exhaust pipe reserved in the bathroom, it needs to be equipped with a check valve to prevent odor crossing, and it is also necessary to punch holes with an impact drill and fix the expansion screws.
Remove an aluminum plate and make an exhaust fan bracket on top to fix the exhaust fan installation.
Is it windy when you hold on? If anything, it's that the pull wire switch is broken. The pull wire switch is dual-purpose, one is to open the outer cover, and the other is to turn on the power! >>>More
It is best for the exhaust fan to have convection air, this kind of thing is worth what you pay for (of course, excluding being cheated) It is best to press two and two exhaust ports for dry and wet separation, and finally all belong to one exhaust fan. If the bathroom.