What is a redundant gas valve?
A) a gas valve that has no real purpose
B) a gas valve that was once necessary on older furnaces but is no longer used
C) a gas valve that is used in case the main valve quits working
D) a gas valve with two valves mechanically in series
Question 2
What could cause the tungsten electrode to turn gray or blue?
A) The operator had only 1/4 to 1 inch stick out, and that is not enough to prevent electrode burning.
B) Not enough electrodes stick out.
C) Answers A and B are both correct.
D) Not enough post flow
E) Too much post flow
Some plastic intake manifolds are equipped with a pressure relief valve that would open in the ...
Checking the fuel pressure using a fuelpressure gauge connected to the Schrader valve.
Math Joke: Be Rational, Get Real
Mitral valve prolapse
Average real hourly wages (2010 dollars) by education level, full-time workers aged 17 to 34 in 2011
Prove that each of the following real functions f has a discontinuity. For each function, ...