Freezers that use liquid nitrogen to freeze food quickly are known as:
A) Blast freezers. B) Conduction freezers.
C) Immersion freezers. D) Cryogenic freezers.
Question 2
Large rooftop package AC units often use ________ sensors to help draw in fresh air to meet code requirements and to cool if temperature and humidity permit.
A) Enthalpy B) Low pressure C) Economizer D) Airflow