_____ is a major cause of damage to rigs.

A. flying debris
B. a rig hitting overhead objects
C. a rig hitting a freight dock
D. a surface that is too soft to support the weight of a rig


Answer: B

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One reason that the United States avoided the frightful excesses of the French Revolution is that

A. America declared martial law until the Constitution was enacted in 1789. B. the American Revolution suddenly overturned the entire political framework. C. cheap land was easily available and America had few landed aristocrats. D. political democracy preceded economic democracy. E. a strong sense of class consciousness already existed.

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Why is wheat in grain mixtures kept to a maximum of 50 percent?

What will be an ideal response?

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The sine of 90° is equal to 1.

Answer the following statement true (T) or false (F)

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The ozone layer occurs in the stratosphere

Indicate whether the statement is true or false

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