Given that F(?) = F[f(t)], prove the following results using the definition of Fourier transform:
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____ admixtures reduce the amount of water needed to produce concrete of a given consistency.
A. Retarding B. Air entraining C. Water-reducing D. Pozzolan
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Most control transformers are _____.
a. askarel-insulated step-up b. dry-type step-down c. liquid-insulated step-up d. oil-insulated step-down
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A multiple-disc clutch is applied by ________.
A) One or more coil springs B) Fluid pressure pushing against a piston C) A piston and air pressure D) None of these
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The Condition and Thriftiness category is worth how many points?
A. 5 B. 10 C. 15 D. 25
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