Poor ventilation may exist in a building when the concentration of carbon dioxide in the building exceeds
_____.
a. 100 ppm
b. 500 ppm
c. 1,000 ppm
d. 1,300 ppm
c
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The first step in the process of shutting down a skid-steer loader is to _____.
a. set the parking brake b. lower the bucket so it is flat on the ground c. cycle the hydraulic controls to release pressure d. place the operator controls in neutral
An elevated material-staging platform is supported by two or more beams called _____.
a. counterweights b. shoring c. truss girders d. outriggers
The second line of defense against disease agents are cells and chemicals in the:
a. Bloodstream c. Antigens b. Nostrils d. Colostrum
The three-wire control circuit for a motor has a momentary stop (NC) and start (NO) push button, motor contactor, and overload contacts wired in series, and an auxiliary contact connected across the stop push button contacts
Indicate whether the statement is true or false