Fire dampers are typically required in:
A) All residential buildings.
B) All buildings that have ductwork.
C) All commercial buildings with ductwork passing through firewalls.
D) The chimney of all residential fireplaces.
C
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Bronze is an alloy of copper, zinc, and tin with small amounts of other elements. If the percent composition is 56% copper, 1% zinc, and 42% tin, what is the ratio of copper to tin?
A. 4/3 B. 3/2 C. 2/1 D. 3/1
Which of the following types of tree produces seeds in cones, has needle-like leaves, and produces
softwood?
a. evergreens c. pulpwoods b. hardwoods d. conifers
A digital ohmmeter measures a 100 V conductor at 99 V. The figure is within tolerance. What can we conclude from this fact?
A) The meter has a span of 99 V. B) The meter is an analog meter. C) The meter needs recalibration. D) The meter does not need recalibration.
A blind hole is a hole in which the depth must be defined.
Answer the following statement true (T) or false (F)