Which is the most common method of attaching a kingpin to a trailer upper coupler assembly?
A. SAE Grade 8 fasteners
B. SAE Grade 5 fasteners
C. Welding
D. Lockpin
C. Welding
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Sketch an example of how contour lines are used to represent the following characteristics.
1. Steep, uniform slope 2. Gentle, uniform slope 3. Concave slope 4. Convex slope 5. Ridge 6. Valley 7. Hilltop 8. Saddle 9. Volcanic crater 10. Cliff
What kind of mounting is often used in tunnels and other underground installations where equipment is separated by long distances?
a. Wall mounting b. Direct rod mounting c. Trapeze mounting d. Center-hung mounting
Which BMS control computer front-end software function operates to provide system operators with
information about monthly trends in system temperatures and pressures or energy usage? a. Operator management b. Graphical interface c. Database management d. Data collection
In the feedback system in Figure E-4 
What range of real values of K makes this system stable?
