The layer of the atmosphere closest to Earth is the:
a. thermosphere c. mesosphere
b. troposphere d. stratosphere
B
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No spermatozoa production occurs until a stallion is well over ____ old.
A. 6 months B. 10 months C. 1 year D. 2 years
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Which of these is NOT a sign of mastitis?
a. animal has a high temperature c. animal's refusal to eat b. a tender udder d. shiny eyes
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The difference between the cut-out and cut-in points of a control is known as:
A) Spread. B) Differential. C) Setpoint. D) Range.
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The two general categories of metering devices are:
A) High pressure and low pressure. B) Pressure-reducing and pressure-increasing. C) Copper and brass. D) Fixed and modulating.
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