What mode of transportation was the primary contributor to the demise of road construction in the U.S. in the early 19th century, and what advantages did the new mode offer?
What will be an ideal response?
Canals became popular in the early 19th century through large projects such as the Erie Canal and several smaller efforts. Recent improvements in waterway transportation, such as the successful demonstration of the steamboat in 1807, generated interest in use waterways. Waterways provided advantages over the roadways in their level profiles and relative ease of effort in moving freight when compared with roadways.
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Where the MMC modifier is specified in the tolerance portion of a feature control frame, what four items should come to mind?
What will be an ideal response?
________: a quantitative restriction on the amount of a product that may enter a country during the time period.
Fill in the blank(s) with the appropriate word(s).
Boards used as edge forms for tilt-up panels are commonly _____.
a. 1" × 3" or 1" × 4" lumber b. 2" × 3" or 2" × 4" lumber c. 2" × 6" or 2" × 8" lumber d. 2" × 8" or 1" × 10" lumber
Why do air-source heat pumps usually require auxiliary heat?
A) Because air-source heat pumps break down a lot B) Because the heating capacity of the unit drops as house heating requirements increase C) The heat pump compressor will not start in cold weather unless it is first warmed up D) The heat that a heat pump "pumps in" must first be provided by an auxiliary heat source