Before attempting to lift any material, _____
A) look for any protruding nails, wires, or sharp edges
B) use a safety harness
C) ask your supervisor for help
D) ensure the stacking ratio is no greater than 3:1
Answer: A
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La iluminación en riel en una pared debe instalarse por lo menos _____ encima del suelo a menos que esté protegido o sea un riel de tipo de baja tensión.
a. 5' (1,52 m) b. 6' (1,83 m) c. 8' (2,44 m) d. 10' (3,04 m)
What is the circumference of a circle whose radius equals 18.246 centimeters? Use 
= 3.1416 and round to 3 decimal places.
Fill in the blank(s) with the appropriate word(s).
A two breed crossbreeding system will produce less heterosis than a three breed crossing system.
Answer the following statement true (T) or false (F)
For personal safety on the job site, workers with long hair should _____
a. gather it in a ponytail b. avoid areas where power tools are in use c. cut it short d. contain it with a net, hat, or other headgear