The design of the darkroom should be light leakproof for what reason?

Fluidotherapy units are usually kept in a temperature range of

A) 135 to 143°F B) 115 to 123°F C) 105 to 113°F D) 125 to 133°F

____________________, the application of the concept of fairness, implies impartiality in the administration of rewards.

Fill in the blank(s) with the appropriate word(s).