单选题The term SEAWORTHY TRIM means（）the ship must be in trim to meet the perils of the passage by sea to the next port not only in the sense that she should be left with an adequate amount of cargo to keep her on an even keel，but also that where necessary part of her cargo should be bagged to stop it shifting while out at sea．AitBthatCwhereDwhile
单选题
The term SEAWORTHY TRIM means（）the ship must be in trim to meet the perils of the passage by sea to the next port not only in the sense that she should be left with an adequate amount of cargo to keep her on an even keel，but also that where necessary part of her cargo should be bagged to stop it shifting while out at sea．
A
it
B
that
C
where
D
while
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