The boiler system component that monitors water temperature and possibly controls water circulation is the

_____.

a. water level control
b. zone control
c. makeup water valve
d. aquastat


d

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The basic use for the contactor is for ____ in resistance heating elements, lighting, magnetic brakes, or heavy industrial solenoids.

a. switching of power b. time delay c. increasing impedance d. regulating voltage

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Explain the difference between PB EIFS and PM EIFS and why PB EIFS is more commonly used.

What will be an ideal response?

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Why is it possible for the "colonial nosegay" to be made well in advance?

What will be an ideal response?

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Explain the function of the steel pipe reamer and how the device operates.

What will be an ideal response?

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