By using 3D CAD, the task of determining intersections and developments is greatly reduced
Indicate whether the statement is true or false
True
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The microfilm used in mechanical engineering is generally prepared as one frame or print attached to this type of card.
a. photocopy b. aperture c. roll d. microfilm
Expanded perlite is commonly called _____.
a. wool b. rock c. chalk d. perlite
?Which of the following is true of electronic onboard recorders (EOBRs)?
A. ?They can be accessed for accident analysis. B. ?They can track HOS. C. ?They can store data bus info. D. ?All of the above
The operating sequence to light the main burners on an intermittent pilot system is
A) the main valve is energized, then the spark igniter, and finally the pilot valve B) the pilot valve and spark igniter are energized, the pilot flame is proved, and then the main gas valve is energized C) the main valve and spark igniter are energized, the pilot flame is proved, and then the pilot gas valve is energized D) the pilot valve and main valve are energized simultaneously