单选题Which of the following precautions should always be carried out in dry dock?（）ALiquids should never be transferred between tanks without consulting the dock masterBIf sea valves have been disassembled, all bonnets must be checked for leakage when the ship is re-floatedCBefore re-floating, all sea chest strainers should be verified as having been replacedDAll of the above
单选题
Which of the following precautions should always be carried out in dry dock?（）
A
Liquids should never be transferred between tanks without consulting the dock master
B
If sea valves have been disassembled, all bonnets must be checked for leakage when the ship is re-floated
C
Before re-floating, all sea chest strainers should be verified as having been replaced
D
All of the above
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