How are holes and arcs dimensioned? Draw examples
What will be an ideal response?
Arcs are dimensioned with the radius preceded by the abbreviation R.
Circles are dimensioned with the diameter preceded by the symbol .
Drawing examples will be evaluated by the instructor.
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Technician A says an engine with an intake manifold vacuum leak may misfire at idle and lower engine speeds. Technician B says a faster-than-normal idle speed in a fuel-injected engine may be caused by an intake manifold vacuum leak. Who is correct?
A. Technician A B. Technician B C. Both A and B D. Neither A nor B
Which is not a category of breeding purpose sheep?
A) Ram breeds B) Ewe breeds C) Light wool breeds D) Dual-purpose breeds
In one field trial comparing no-till and conventional tillage, soil samples taken after 15 years without liming revealed that the pH of the upper 15 cm was lower on the no-till plot than on the conventional plot. Which of the following most likely accounts for this difference?
A) Plowing mixes the surface soil more thoroughly. B) Al3+ ions are tied up by the organic matter thereby releasing H+ ions. C) Acidifying effects of nitrogen-containing fertilizers. D) Earthworms were more active in the no-till plot. E) Organic decomposition produced more organic acids in the no-till plot.
What type of cylinder head is always used on an engine with a aluminum block?
A. Aluminum or cast iron. B. Aluminum. C. Space age plastic. D. Cast iron.