When using an extension ladder to access a roof, the ladder must extend _____________ above the roof.
A. 24"
B. 30"
C. 36"
D. 48"
Answer: C
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What happens to the reaction rate when the temperature increases?
A. Reaction rate increases B. Reaction rate decreases C. Reaction rate does not change D. Reaction does not occur
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The speed at which the magnetic field rotates is known as the ____.
a. synchronous speed b. broadband speed c. asynchronous speed d. download speed
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Cuando se utiliza una grúa para elevar personal, se debe reducir la capacidad de carga de la grúa un _____.
a. 10% b. 25% c. 50% d. 70%
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9.75 + (-4.37 ) - (-2.5 ) - 8.45 =
A) -0.57 B) 11.33 C) 0.57 D) -5.57
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