OS&Y (Outside Screw and Yoke) gate valves are installed at several places in a standpipe system, and can be used to shut down just a part of the standpipe system. If the stem is flush with the control wheel the valve is
A. opened
B. ½ closed
C. closed
D. inoperable
Answer: C. closed
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In high rainfall areas, soils are usually ____________________ and somewhat acidic
Fill in the blank(s) with the appropriate word(s).
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According to Ohm's Law, what is the resistance when 1 volt pushes 1 ampere of current through a conductor?
A. 0 ohm B. 1 ohm C. 1 watt D. 1 coulomb
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Which gas is generally considered to be the lean indicator? (The higher the level of this gas, the leaner the air-fuel mixture.)
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Using node voltage analysis, find the voltages V1 and V2 for the circuit of Figure P3.2.
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