Due to environmental concerns, most manufacturers no longer manufacture _____.

a. mercury switches
b. asbestos sensors
c. mechanical switches
d. electrodes


a. mercury switches

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En las aplicaciones de doble capa, todas las uniones de las planchas o bloques aislantes deberían:

a. sellarse. b. enlodarse. c. abrirse. d. escalonarse.

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Whenever connecting any motor, it is always best to use the _______________ information provided by the manufacturer.

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

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To make cheese, a bacteria starter ____________________ is added to pasteurized milk

Fill in the blank(s) with correct word

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The ____________________ (two words) is one of the most popular decorations of the Christmas season

Fill in the blank(s) with correct word

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