For a ladder contacting the wall 20ft above the ground, the base should be ____ from the wall.
a. 6 ft
b. 4 ft
c. 3 ft
d. 5 ft
Ans: d. 5 ft
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____ lasers are at the heart of fiber-optics.
A. Semiconductor B. Carbon dioxide C. Metal D. Water-based
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The kingmakers sit at the top of the influence triangle
Indicate whether the statement is true or false
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How did the great consul generals bend the Republic to the breaking point?
a. They sided with reformers such as the Gracchi brothers. b. They refused to follow the Senate’s orders to pacify North Africa. c. They abolished the office of tribune. d. They subverted and bypassed the Senate.
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A chain should be removed from service if any portion is worn by more than _____
a. 15 percent b. 25 percent c. 40 percent d. 50 percent
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