What is the source of most VOCs (volatile organic compounds) emitted from an on-highway vehicle?

A. operation of engines at high temperatures
B. lugging an engine
C. idling in traffic
D. refueling and boil-off from vehicle tanks


Answer: D

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Two machines are being considered for purchase. The Sande 10 costs $36 000 new and is estimated to last five years. The cost to replace the Sande 10 will increase by 4 percent each year. Annual operation and maintenance costs are $2 400. It will have a trade-in (salvage) value of $3 000. The Sande 20 costs $76 000 to buy, but will last 10 years and will have a trade-in (salvage) value of $4 000. The cost of operation and maintenance is $1 400 per year. Compare the two machines and state the basis of your comparison. Include a cash-flow diagram for each alternative. Assume all interest rates at 6 percent per year unless other-wise stated.

What will be an ideal response?

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Given a circular curve connecting 2 tangents that intersect at an angle of 48°. The PI is at station (948+67.32) and the design speed of the highway is 60 mi/h. Determine the point of the tangent and the deflection angles from the PC to full stations for laying out the curve.

What will be an ideal response?

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Voltage drop in a circuit is calculated by multiplying the current flow times the ____.

What will be an ideal response?

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A rotary mower is recommended when the highest turf quality is expected

Indicate whether the statement is true or false

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