Technician A says an open-end wrench provides the best grip on a hex head fastener. Technician B says a box-end wrench provides the best grip on a hex head fastener. Who is correct?

A. Technician A only
B. Technician B only
C. Both Technicians A and B
D. Neither Technician A nor B


B. Technician B only

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Corn requires a lot of nitrogen in order to produce large yields

Indicate whether the statement is true or false.

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__________________ is based on our understanding of the individuality of the genetic code

Fill in the blank(s) with correct word

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What is true about the mass of reactants and the mass of products in all chemical reactions such as combustion?

What will be an ideal response?

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A partially filled cylinder of R-407c weighs 48.3 pounds. When the cylinder is empty, it weighs 13.6 pounds. What is the weight in pounds of the R-407c in the partially filled cylinder?

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

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