What is the difference between the following two grades for automotive diesel fuel: Grade number 1-D and Grade number 2-D?
What will be an ideal response?
Grade number 1-D, known as number 1 diesel, is more volatile, is thinner, and is used in very low temperatures.
Grade number 2-D, known as number 2 diesel, is of a lower volatility and is used for most automotive driving conditions.
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Common problems encountered when soil becomes saturated during critical nursery operations are delays in digging trees and seedlings
Indicate whether the statement is true or false
In order to replace an old process for producing a polymer that reduces friction loss in engines, two current-technology machines have been identified. Process K will have a first cost of $160,000, an operating cost of $7000 per month, and a salvage value of $50,000 after 1 year and $40,000 after its maximum 2-year life.
Process L will have a first cost of $210,000, an operating cost of $5000 per month, and salvage values of $100,000 after 1 year, $70,000 after 2 years, $45,000 after 3 years, and $26,000 after its maximum 4-year life. You have been asked to determine which process is better using a study period of (a) 1 year, (b) 2 years, and (c) 3 years. The company’s MARR is 12% per year compounded monthly. (Note: Problem 11.46 continues this analysis via spreadsheet with the added option of upgrading the in-place process.)
____ are used most often in precast concrete beams to column connections because of the greater thicknesses of the precast concrete members.
A. Threaded rods B. Hot-driven rivets C. Impact rods D. Extra-long common bolts
The water table is _____
a. a document identifying all water sources on the job site b. a sump where groundwater is collected for pumping c. the elevation at which groundwater is encountered d. an aid to calculating the water percentage in concrete