Some plants are highly sensitive to low concentrations of fluoride commonly put in water systems to prevent tooth decay
Indicate whether the statement is true or false
T
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The _____ technique is done by resting the cup on the workpiece.? ?
A. resting the cup? B. beveling? C. walking the cup? D. freehand?
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Early engines were called flat head designs because they ________
A) Used spark plugs at the top of the cylinders B) Were only inline engines C) Did not include valves D) Used valves located in the cylinder block
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Which of the following are the most commonly used types of fire hose couplings?
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Examples of control devices include:
A) Compressors, signal lights, and defrost timers. B) Motors, resistance heaters, and solenoid valves. C) Compressors, thermostats, pressure switches, and heaters. D) Thermostats, pressure switches, and humidistats.
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