Compare and contrast the differences between shaft mines, slope mines, and drift mines

What will be an ideal response?


A shaft mine accesses passageways that are vertical to the coal seam. A slope mine has the access tunnel on a slope
from the surface to the coal seam. A drift mine is used when a passageway is bored in a hill or mountain

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Which of the following represents 0.118A?

A. 118 uA B. 1.18 mA C. 118 mA D. 1.18 kA

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Nectar is a pesticide

Indicate whether the statement is true or false.

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In the voltage follower, the output ____.

a. voltage is the same polarity as the input voltage b. of the op amp is connected directly back to the inverting input c. will be a positive-going voltage at the same time d. voltage will be opposite in polarity to the input voltage

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In the early and conceptual design stages of a proj­ect, what are the cost estimates called? Approxi­mately how close should they be to the actual cost?

What will be an ideal response?

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