单选题Main steam and exhaust pipes for winches and similar gear shall not pass through crew accommodation nor, whenever technically possible, through alleyways leading to crew accommodation; where they do pass through such alleyways, they shall be adequately （）.Aventilated and taggedBventilated and cooled downCinsulated and encasedDinsulated and warmed up
单选题
Main steam and exhaust pipes for winches and similar gear shall not pass through crew accommodation nor, whenever technically possible, through alleyways leading to crew accommodation; where they do pass through such alleyways, they shall be adequately （）.
A
ventilated and tagged
B
ventilated and cooled down
C
insulated and encased
D
insulated and warmed up
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