Airflow pressure in ductwork is measured in inches of ____.
A. mercury pressure
B. water column
C. air pressure
D. mercury column
Answer: B
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Drip edge flashings are installed at eave and rake of a steep roof. Which material are they made of?
What will be an ideal response?
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Which alcohol is dangerous (toxic)?
A) Ethanol B) Methanol C) Both A and B D) Neither A nor B
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A natural fiber or synthetic rope line used to control the swinging of the load in hoisting activities is a _____
a. link line b. tag line c. load line d. lead line
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Which of the following signifies a power supply issue?
A) inconsistent water flow B) inconsistent airflow C) a temperature drop D) a malfunctioning thermostat
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