Technician A says that most highway tractors use tempered steel, C-channel frame rails. Technician B says that some aluminum alloy truck frame rails can have up to twice the yield strength of mild steel. Who is correct?
A. Technician A
B. Technician B
C. Both A and B
D. Neither A nor B
B. Technician B
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The ____ diagram shows the logical connections and operation of the control circuit.
a. heater b. cooler c. ladder d. wiring
What is the most common method for controlling steam pressure downstream while still providing the needed amount of steam volume to the loads?
a. Inserting an orifice into a steam pipe b. Using a steam pressure-reducing valve c. Tap bleed steam from a turbine exhaust d. Use a steam trap
Por lo general, se necesita un tirante central en la forma de una escalera cuando _____.
a. las escaleras son anchas b. las escaleras son altas c. la elevación de unidad es superior a 10 pulgadas d. la elevación total es supe- rior a 10 pies
At the very basic level, ____ can be just placing two pieces of metal flat on a table and tack welding them together for practice welding.
A. nesting B. assembly C. grinding D. laying out