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单选题
Damaged bulkheads often take a permanent set which is independent of the panting or bulge caused by water pressure. To control this,you should().
A

install shoring so the shoring supports the damaged bulkheads without pushing on them

B

install shoring so that it pushes on the damaged bulkhead while supporting it

C

use jacks or chain falls to remove the set before installing shores

D

place sandbags by the bulkhead without installing shores


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