What are the two main types of duct-cleaning equipment being used?

A) Units that use brushes and vacuum and units that use ultrasonic particle precipitation
B) Units that use high-velocity air and units that use sprayed cleaning compounds
C) Large truck-mounted units and small portable units
D) Ultraviolet units and ultrasonic particle precipitators


C

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A vehicle's ____________________ is a line drawn between the center of the front axle and the center of the rear axle.

Fill in the blank(s) with the appropriate word(s).

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Identify the axiom or postulate that applies to the following statement.    If a = 35 in, b =12 in, and c = a + b then c = 47 in

Fill in the blank(s) with the appropriate word(s).

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Which of the following represents the 2's-complement for the signed number -7810?

A) 00110010 B) 01001110 C) 10110010 D) 11001110

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It is permissible to remove SCBA during salvage operations after _______.

a. all remaining fire has been extinguished b. the area is clear of smoke c. the atmosphere has been tested and found safe d. the fire is extinguished

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