Which type of structural connection is seldom used today but may be specified on original drawings? ___________
Fill in the blank(s) with correct word
Rivet
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Which of the following backflow protection methods cannot be used on continuous pressure applications?
a. air gap b. reduced pressure zone backflow preventer c. atmospheric-type vacuum breaker d. none of the above
To deal with British and French violations of America's neutrality, President Jefferson
A. declared war on Britain. B. enacted an economic embargo that prohibited the exports of all goods from the United States, regardless of whether they were being shipped on American or foreign merchant ships. C. declared war on France. D. enacted an economic embargo on the exports of all goods shipped from the United States to Britain, but merely raised the level of export duties (taxes) on all goods shipped from the United States to France. E. concluded trade treaties with Spain and Holland.
A vertical distance above a datum point is described as a(n) _____.
a. contour b. rise c. differential d. elevation
Answer the following statement(s) true (T) or false (F)
1. For many engineering situations, exponential and logarithmic models are used to describe the relationships between dependent and independent variables because they predict the actual relationships more accurately than linear models do. 2. For nonlinear models (equations) the slope is constant. 3. The rate of change refers to how a dependent variable changes with respect to an independent variable. 4. The term rate of change always refers to how a physical quantity varies with time.