Because concrete is heavy, doing stretching exercises before working with it will help prevent _____.
a. sore arms
b. leg cramps
c. strains and sprains
d. bruises
Answer: C
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Which type of glass is commonly used in drive-in bank windows?
A) Laminated glass B) Annealed glass C) Heat-strengthened glass D) Tempered glass
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Which of the following is not a type of variable resistor?
A) thermistor B) photoconductive cell C) potentiometer D) All are types of variable resistors.
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OSHA publishes guidelines for general safety and health program management that