This compartment is used in a revision history block to identify the location of the change on the print.
a. description
b. location
c. placement
d. zone
d. zone
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A straight ladder must be used on stable, level ground unless _____.
a. someone is at the bottom of the ladder and holds it for you b. it is secured at the top and bottom to prevent movement c. the ladder comes equipped with special non-skid safety feet d. someone is at the top of the ladder and holds it for you
A trap in the condensate line prevents ____.
A. air and foreign material from being drawn up into the drain line B. additional cooling load from warm air drawn up into the air handler C. insect invasion of the system D. all of the above
?What is used to calculate net collector area for an evacuated tube solar collector?
A. ?outer dimensions of the collector housing B. ?dimensions of exposed glazing C. ?dimensions of the absorber plate and headers D. ?dimensions of the mounting surface minus the dimensions of the absorber plate
When concrete construction must be interrupted, a ____is used to provide a clean surface where work can be resumed.
A. construction joint B. wire mesh C. girder D. expansion joint