Which of the following statements is true?
A) Forecasts for families of products should be built up from individual product forecasts.
B) Dependent demand items should be forecast.
C) A forecast for sales next week will not be as accurate as for a year from now.
D) All of the above are true.
E) None of the above is true.
E
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Oil-fired systems are generally ignited by a high-voltage transformer producing an arc across two electrodes located near the ____.
a. transformer b. nozzle c. triac d. cell
Explain the dimension origin symbol.
What will be an ideal response?
100 kg of water is contained in a piston-cylinder device. Initially, it is saturated liquid water at P=10 bar. It is heated at constant pressure until it is superheated steam at P=10 bar and T=250 °C.
A) Determine the change in internal energy (U) of the water, in kJ. B) Determine the amount of work (WEC) done on, or by, the water in this process.
All of the following are functions of the lubricating system EXCEPT:
A. to pump oil directly to engine parts that are not part of the pressure line B. to reduce friction between engine parts C. to absorb heat created by movement of the engine parts D. to clean the engine