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ID 14173
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Use annex
The pump shown in the annex works with a piston and two valves at the positions 1 and 2. To the right, enlarged cut-outs of the two positions are shown. The driving wheel turns clockwise and water is pumped from left to right. Which cut-out best shows the current situtation at position 2?
A
A
B
B
C
C
D
D
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