题目内容
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.
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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.
The purpose of the( ). in the vapor compression cycle is to accept the low-pressure dry afrom the evaporator and raise its pressure to that of the condenser.
The purpose of the expansion valve is to control the flow of refrigerant from the high-pressescondensing side of the system into the low-pressure( )
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