Which of the following refrigerants is not considered a drop-in replacement for the other?

a. HFC-410A for HCFC-22
b. HCFC-409A for CFC-12
c. HFC-407C for HCFC-22
d. HCFC-123 for CFC-11


a. HFC-410A for HCFC-22

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The _____ has steel rods imbedded in and running lengthwise throughout for extra strength.

A. concrete block lintel B. angle iron C. bond beam lintel D. reinforced beam

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In a power recirculating ball steering gear, what is the purpose of torsion bar twist?

What will be an ideal response?

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If B = $400,000, n = 6 years, and S is estimated at 15% of B for a new pavement recycling ma­chine, use the SYD method to determine (a) the book value after 3 years, and (b) the rate of de­preciation and the depreciation amount in year 4.

What will be an ideal response?

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Why should brake calipers be supported by a wire during brake service and not allowed to hang by the flexible brake hose?

A) To help prevent damage to the brake hose B) To keep air from getting into the system C) To prevent bending the hose support bracket D) To hold the caliper higher than the master cylinder to prevent fluid loss

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