____ is lightweight, having a specific gravity of only 2.7 times that of water and approximately one-third that of steel.

A. Tin
B. Lead
C. Aluminum
D. Bauxite


Answer: C

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The MIL light of an OBD-equipped vehicle is flashing. Technician A says a spark plug wire may be shorted to ground. Technician B says a cylinder may have low compression. Who is correct?

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

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An open circuit will cause the fuse to blow out.

a. true b. false

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If a green drains poorly, the addition of ____ could result in the formation of black layer

A) potassium B) sand C) ?sulfur D) calcined clay

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An ideal gas with CP = (7/2)R and molecular mass of 28 g/mol enters an adiabatic, steady state valve at T = 500 K and P = 0.5 MPa. The entering and exiting streams both have negligible velocity. What are the temperature and pressure of the exiting stream?

A. T = 500 K, P = 0.1 MPa B. T = 500 K, P cannot be determined from the given information. C. T = 450 K, P = 0.1 MPa D. T = 450 K, P cannot be determined from the given information. E. Neither T nor P can be determined from the given information.

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