Las barras de acero unidas dentro del concreto para aumentar su resistencia a veces se denominan _____.
a. alambre soldado (WWF)
b. “rerods”
c. acero pretensionado
d. amarres
Answer: B
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According to the National Fuel Gas Code, when must fuel gas piping be tested?
a. after installation b. before and after connecting appliances c. before operation d. all of the above
One cubic meter of an ideal gas at 600 K and 1000 kPa expands to five times its initial volume as follows:
What will be an ideal response?
(a) By a mechanically reversible, isothermal process.
(b) By a mechanically reversible, adiabatic process.
(c) By an adiabatic, irreversible process in which expansion is against a restraining pressure of 100 kPa.
For each case calculate the final temperature, pressure, and the work done by the gas. Take 
= 21 
To align a vise on a machine table:
A) Place the vise against stops in the table T-slots B) Indicate the solid jaw C) Indicate the adjustable vise jaw D) Measure the vise jaw with a rule
A customer complains that every time the lights are turned on in the vehicle, the dash display dims. Which of these is the MOST likely cause which of these conditions?
A) Normal behavior for LED dash displays B) Feedback problem from a short-to-voltage between headlights and dash display C) Normal behavior for VTF dash display D) Poor ground in lighting circuit causing a voltage drop to dash lamps