A catalytic space heater differs from other types of gas space heaters in that a catalytic space heater:
A) Does not require a steady supply of gas during operation.
B) Condenses water out of the combustion gases.
C) Has no vent.
D) Has no flame.
Question 2
Which of the following statements regarding mechanical-draft cooling towers is correct?
A) Counterflow towers are shorter and wider than crossflow towers.
B) Three fans are required for a forced-draft crossflow cooling tower.
C) Cross flow cooling towers may be used for indoor applications.
D) Only one fan is required for an induced-draft counterflow tower.