Before humans began to devise ways to produce their own food, most of their time was devoted to which purpose?

a. Raising livestock and crops c. Finding enough food to eat
b. Developing select crop varieties d. Caring for the young


C

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Find the volumetric efficiency of a 1.8L engine operating at 6000 RPM. The actual airflow through the engine is 171.0 CFM. Round your result to the nearest percent

What will be an ideal response?

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When load testing a battery, which battery rating is usually used to determine how much load to apply to the battery?

A) RC B) CCA C) CA D) MCA

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The Sawbuck is generally used to _____

a) support lumber while it is being cut b) cut wide moldings c) cut dimension lumber to length d) do rip cuts

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To prevent heat buildup in the weld and form smaller puddles, the welder can increase the _____

a. voltage b. arc length c. bead width d. travel speed

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