Which of the following is not true of agriculture in the 1800s?
a. Virtually all farms were small.
b. Relatively easy access to capital helped the farms survive.
c. The whole value chain was essentially done on each farm.
d. Limited transportation and communication restricted farmers to local markets.
e. Poor transportation required communities to be self-sufficient.
B
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Indicate whether the statement is true or false
Electronic control systems operate by:
A) Providing a modulating air pressure in response to monitored conditions. B) Turning relay coils on or off to complete circuits. C) Processing electronic signals with a microprocessor. D) Providing a varying DC voltage in response to monitored conditions.
____ is the flow of water that results from precipitation following rainfall or as a result of snowmelt.
A. Stormwater B. Runoff C. Erosion D. Discharge
Problem 1.17 When the force P reached 1600 lb, the wooden specimen shown failed in shear along the surface indicated by the dashed line. Determine the average shearing stress along that surface at the time of failure.
