What must be done to a wafer-lug butterfly valve prior to installation?
a. Lubricate the shaft.
b. Open the valve.
c. Close the valve.
d. Align the flanges.
b
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According to the CDC about ____ of American children suffer from iron deficiency
a. 1% c. 18% b. 5% d. 24%
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Digestive problems can arise from a lack of ____________________, the lactose-digesting enzyme.
Fill in the blank(s) with the appropriate word(s).
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In the alphabet of lines, an area not included in the cutting line view is shown with _____
A) section cuts B) object lines C) break lines D) dimension lines
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In a high-pass filter, the capacitor is connected in _____ with the load resistor.
A. parallel B. series
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