When refueling a CNG vehicle, why is it recommended that the tank be filled to a high pressure?
A) The range of the vehicle is increased B) The cost of the fuel is lower
C) Less of the fuel is lost to evaporation D) Both A and C
A
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?Welding engineers ____
A. ?clean slag from the welds, and help position weldments. B. ?position all the parts in their proper places and make ready for the tack welders. C. ?often help the welder by making small welds to hold parts in place. D. ?design, specify, and oversee the construction of complex weldments.
What is the formulation of a pesticide that is not water soluble but must be applied in a water carrier?
a. emulsifiable concentrate c. granules b. gel d. fumigant
Metric wire size is measured in units of ________
A) Cubic centimeters B) Meters C) Square millimeters D) Cubic millimeters
The most common weld defect caused by surface contamination is _____
a. scale b. porosity c. brittleness d. layering