题目内容
An exhaust fan is commonly installed to avoid excessive( )air pressure in the space.
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( )may be defined as the process of adding heat to an enclosed space to maintain itstemperature above ambient.
On board ships, temperature maintenance can be made easier by increasing the ratio ofrecirculated to fresh air. Most air conditioning units have( )for adjusting this ratio.
The cooling coil also performs the dehumidification function. If the coil temperature is below the air( ), water vapor will condense and air humidity will be lowered.
In order to maintain the desired( )in the conditioned spaces, the HVAC system must addor remove thermal energy to or from the space.
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