What is the most abundant element in the known universe?

A. oxygen
B. carbon
C. iron
D. hydrogen


Answer: D

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Arcs are dimensioned with:

a. diameter ΓΈ b. radius (R) c. length (L) d. circumference (C)

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The secondary of each instrument transformer is ____________________ to provide protection from high-voltage hazards, as provided in Article 250 Part IX of the NEC.

Fill in the blank(s) with the appropriate word(s).

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Guinea pigs are carnivores

Indicate whether the statement is true or false

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When a semi-trailer bogie is moved either forward or rearward, what is changed?

A. length of trailer B. trailer bridge formula C. tractor bridge formula D. all of the above

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