List the steps in flushing a system
What will be an ideal response?
Recover the system refrigerant, disconnect the lines at the evaporator coil, front seat the service valves, flush first with nitrogen, next flush with solvent, flush again with nitrogen, install new clean-up filter drier, evacuate and recharge system.
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When two dissimilar metals are joined at one end, and that junction is heated, a voltage is produced. This is known as the ____________________.
Fill in the blank(s) with the appropriate word(s).
____ is the rate at which combustion will move across a material.
A. Smoke development B. Fuel contribution C. Fuel spread D. Flame spread
A single change in direction of less than 90° is known as a(n) _____.
a. elbow b. offset c. saddle d. kick
You have a large-leaved shrub planted next to the street and every summer the leaf edges turn brown in spite of the fact that you water it often. What is the most likely cause of this?
What will be an ideal response?