In a vacuum booster during the holding phase, both the atmospheric and vacuum control ports are open
Indicate whether the statement is true or false
FALSE
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Compressive strength and size variation tests are performed ______ .
A. on one batch of block per day B. and recorded for 14-day tests C. as soon as the block are removed from the kilns D. only at the customer's or contractor's request
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Why are dynamic compressors more commonly used than positive displacement compressors?
A. They are more efficient. B. Less energy is required. C. They have a smaller capacity. D. They require no maintenance.
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What is the total inductance of a 25 mH inductor connected in parallel with a 100 mH inductor?
A) less than 20 mH B) more than 125 mH C) 125 mH D) 20 mH
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The symbol for the word diameter is D.
Answer the following statement true (T) or false (F)
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