An ____ diaphragm valve allows flow to pass when the activating signal is not applied.

A. air-to-open
B. air-to-close


Answer: B

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When assembling a longer lattice boom, which condition should assembly workers avoid?

a. Using spreader bars on boom pendants b. Inserting upper connector pins between sections to be assembled c. Assembling the boom base section first d. Exceeding the maximum boom cantilever length

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List the six components commonly used in growing media and provide the function of each

What will be an ideal response?

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In the article “Temperature-Dependent Optical Constants of Water Ice in the Near Infrared: New Results and Critical Review of the Available Measurements”, the imaginary index of refraction of water ice is presented for various frequencies and temperatures. At a frequency of 372.1 cm–1 and a temperature of 166 K, the index is estimated to be 0.00116. At the same frequency and at a temperature of 196 K, the index is estimated to be 0.00129. The uncertainty is reported to be 10–4 for each of these two estimated indices. The ratio of the indices is estimated to be 0.00116/0.00129 = 0.899. Find the uncertainty in this ratio.

What will be an ideal response?

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In the parking brake system, in order to provide a balanced braking force to each wheel, a(n) ____________________ is used.

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

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