-- card: 10305 from stack: in
-- bmap block id: 11159
-- flags: 0000
-- background id: 2723
-- name: 


-- part contents for background part 19
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6

-- part contents for background part 17
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2

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a barometer

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a closed end manometer

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an open end manometer

-- part contents for background part 6
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none of these

-- part contents for background part 1
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2

-- part contents for background part 18
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CORRECT!