The use of a smoke leak detector is being discussed. Technician A says that a smoke leak detector can be used to find exhaust leaks. Technician B says that to find vacuum leaks, the throttle opening must be blocked off. Who is correct?

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


Answer: C

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Which of the following is NOT an advantage of pilot injection?

A. reduced engine wear B. lower cold-start emissions C. detonation avoidance D. extended EUI service life

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The air infiltration rate through a glass curtain wall is specified in terms of ________.

A) cubic feet per minute. B) pounds per square feet. C) cubic feet per minute under a given inside-outside air pressure difference. D) cubic feet under a given inside -outside air pressure difference. E) none of the above.

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Some 40 to 50% of the solar radiation in humid regions is used to heat the soil

Indicate whether the statement is true or false

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A projection weld is most similar to a:

A. flange weld B. spot weld C. surface weld D. all of the above

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