Hysteresis is a characteristic of magnetic materials wherein a change in magnetization:
A) varies according to the current flow.
B) occurs exactly with the application of a magnetic force.
C) occurs after the application of a magnetic force.
D) occurs before the application of a magnetizing force.
C
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____ is used in tips having from one to six preheat holes.
A. Acetylene B. MPS C. Propane D. Natural gas
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Temperatures exceeding the upper limit of an animal's thermoneutral zone will have no effect on animals
Indicate whether this statement is true or false.
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Which plant requires high amounts of nitrogen?
A) Corn B) Beans C) Potatoes D) Tomatoes
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