The most effective hearing protection is provided by _____.

a. earmuff-type hearing protectors
b. rolled-up cotton balls
c. reusable earplugs
d. disposable earplugs

a. earmuff-type hearing protectors

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Mechanical connections are shown with ____.

a. straight broken lines b. a connection dot c. a connection node d. lines crossing each other

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____________________ is a high-level, real-world, graphic language that is understood by most electricians and technicians.

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

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Which specialized device distinguishes the 74LSXX circuits from standard 74XX circuits?

A) a Schottky diode B) a CMOS transistor C) totem-pole output transistor D) a multiemitter transistor

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Fit testing is not an important prerequisite for effective noise protection.