Debe utilizar _____ para alisar el borde interior filoso de un conducto de metal después de cortarlo.
a. una lima plana
b. una navaja
c. papel de lija rugoso
d. un escariador
d. un escariador
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The ____ of a brazed joint is its ability to withstand a force parallel to the joint.
A. shear strength B. tensile strength C. corrosion resistance D. ductility
Starting protection for any DC automatic controller consists of fuses or circuit breakers rated at ____% of the full-load current of the motor.
a. 100 b. 110 c. 125 d. 150
Which statement about hydraulic ventilation is correct?
a. a straight or solid stream is used b. a medium diameter line is required c. hydraulic ventilation effectively moves large volumes of smoke and heat d. the ventilation crew is not exposed to products of combustion
A paper filter that fits over your nose and mouth to block small airborne particles is called a mist respirator.
Answer the following statement true (T) or false (F)