Technician A says that the sodium filling used in some exhaust valve stems lightens the valve for better low-speed operation. Technician B says that a valve that has a wide margin must be replaced. Who is right?

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


Answer: D

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The normal body temperature of a horse is 99°F to ____________________°F.

Fill in the blank(s) with the appropriate word(s).

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? Identify and state the historical significance of Isabella of Castile.

What will be an ideal response?

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Over a 7-year period, the number of uninsured mo­torists in New Mexico dropped from 33% to 10% because an up-to-date computer database allowed the state to better police its requirements for car and truck liability insurance. Assuming the de­crease occurred uniformly and compounded annu­ally, what was the annual rate of the decrease?

What will be an ideal response?

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A tachometer is used to measure:

A) Energy use. B) Air velocity. C) Wind speed. D) Rotational speed.

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