Green-stained brick often show no sign of a stain until they are _____ .
A. scrubbed with soap and water
B. soaked in rain water
C. washed in an acid solution
D. exposed to salts in proprietary cleaners
Answer: C
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The conditions that must be present for a fire to start are grouped together to form the fire ____________________.
Fill in the blank(s) with the appropriate word(s).
Which of the following describes circumference?
a. The area of one of four quadrants of a circle b. The distance around a circle c. The distance from the center point of a circle to the edge d. The distance from one edge of a circle to the other
Cuando se realizan codos en longitudes cortas de tuberías eléctricas, puede evitarse que la zapata se desplace:
a. sujetando la tubería eléctrica. b. atornillando un acoplamiento en la tubería eléctrica. c. limando la superficie áspera de la tubería eléctrica. d. enrollando un trapo alrededor del conducto.
Usually, a supervisor is not involved in developing or designing a training program, but does _____.
a. implement it b. change it c. staff it d. promote it