The crucial first step in developing a PLC program is _____

A) testing for safety B) determining what must be accomplished
C) selecting the best PLC system D) planning for future expansion


B

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Technician A says that on some engines, guide seals have to be installed on exhaust valves only. Technician B says that even though two valve guide seals might look alike, one could be made of a rubber that will survive longer under higher temperature. Who is right?

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

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Alternating current flows first in one direction and then in the opposite direction.

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

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This chapter has an addendum containing a full set of blueprints for the house

Indicate whether the statement is true or false

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Explain why construction contracts should include a destruction of subject matter clause

What will be an ideal response?

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