After how many days of casting concrete in test cylinders, are they broken to determine the strength of concrete?
What will be an ideal response?
After 28 days.
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A thermistor is a solid-state variable resistor made from a semiconductor material that changes resistance in relation to:
A. Pressure changes. B. Temperature changes. C. Volume changes. D. Voltage changes.
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Plumbing drawings, schedules, and details are successively arranged starting with page ____.
A. Pl-1 B. P-1 C. W-1 D. PD-1
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Normal cranking speed of an engine is about ________
A) 1500 RPM B) 200 RPM C) 1000 RPM D) 2000 RPM
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Which multiple access method uses a spreading code?
A. CDMA B. TDMA C. SDMA D. FDMA
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