What material is most commonly used in the manufacturing of diesel engine cylinder heads?

A. forged steel
B. aluminum alloy
C. middle alloy steel
D. cast iron


Answer: D

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Electricians who are responsible for their own taxes and providing their own insurance are considered _____.

a. apprentices b. commercial electricians c. E&I technicians d. individual contractors

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If the annual cost of goods sold is $10,000,000 and the average inventory is $2,000,000, what is the turns ratio?

A) 0.2 B) 20% C) 5 D) $8,000,000 E) cannot be calculated from the information given

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Technician A says that when spraying larger areas, the technician should choose a clear (or sometimes its additives) that cures at a slower pace. Technician B says that dry spray may not be repairable with detailing. Who is correct?

A. Technician A only B. Technician B only C. Both Technicians A and B D. Neither Technician A nor B

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Graph the responses of the systems of Problem 5.1 to a unit step


A continuous-time system is described by the differential equation y'(t) + 6y(t) = x'(t)
(a) Write the differential equation for the special case of impulse excitation and impulse response.
(b) The impulse response is What is the value of the integral from

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