How willu obtain butan-2-ol from propanal?

How willu obtain butan-2-ol from propanal?
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Last Answer : Answer: B

When the operating handle is in the 'off' position, which master switch contacts for the winch shown in the illustration are closed? EL-0102 A. 'MS-DB & OL' B. 'MS-3, 5, 6, 7, & 8' C. 'MS-LVa & OL' D. 'MS-3, 7 & Reset'

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