Solvents are accidentally spilled on the floor and are on fire. Technician A says a class A fire extinguisher should be used to extinguish the blaze. Technician B says a class ABC extinguisher should be used. Who is correct?

A. Technician A only
B. Technician B only
C. Both Technicians A and B
D. Neither Technician A nor B


B. Technician B only

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¿Qué herramienta su usa para cortar la malla tejida?

a. Tenazas b. Gancho de enlace c. Tijera d. Sierra de mano

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The quantities of flashing and starter strips needed for a roofing project are calculated in _____.

a. linear feet and inches b. cubic feet and inches c. square feet and inches d. metric equivalents

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The stiffness of a certain type of steel beam used in building construction has mean 30 kN/mm and standard deviation 2 kN/mm.

a. Is it possible to compute the probability that the stiffness of a randomly chosen beam is greater than 32 kN/mm? If so, compute the probability. If not, explain why not. b. In a sample of 100 beams, is it possible to compute the probability that the sample mean stiffness of the beams is greater than 30.2 kN/mm? If so, compute the probability. If not, explain why not.

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How does the water vapor from the lithium bromide solution return to the evaporator?

A) It condenses in the heat exchanger. B) It passes through the condenser. C) It condenses in the chiller. D) It passes through the chiller.

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