Cylinders made of ____ have the least weight and when properly maintained, last a long time.
a. Nikasil
b. aluminum
c. cast-iron
d. chrome
b. aluminum
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The accompanying figure shows an assortment of mechanical symbols. What is the symbol at the bottom?
A. Rectangular ceiling diffuser B. Round ceiling diffuser C. Flexible connection D. Transition
If pulsed DC current is not present in the flame rod, what is the effect on the gas valve in a direct spark-ignition system?
A) The system will shut down. B) The valve will open. C) Pulsed DC current has no effect on the gas valve. D) The valve will remain closed.
Most vehicle and tire manufacturers recommend that no more than ________ ounce balance weight be added to a wheel/tire assembly
A) 4.5 B) 3.5 C) 5.5 D) 2.5
New crawl access, new vents, and new hold down and connectors required for lateral bracing should be represented on the _____.
A. interior elevations B. exterior elevations C. foundation plan D. framing plan