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Pick up the incorrect statement from the following: In a dry dock block made of hard wood,

spacing of the blocks is 1.35 m
the lowest block is 1.8 m long 40 cm x 40 cm in cross-section
the middle block is 1.6 m long 40 cm x 40 cm in crosss-section
the top block is 1.2 m long 40 cm x 40 cm in cross-section
none of these.

Correct Answer: none of these.

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