单选题Which is TRUE concerning immersion suits and their use?()AOnly a light layer of clothing may be worn underneathBThey provide sufficient flotation to do away with the necessity of wearing a life jacketCThey should be tight fittingDA puncture in the suit will not appreciably reduce its value

单选题
Which is TRUE concerning immersion suits and their use?()
A

Only a light layer of clothing may be worn underneath

B

They provide sufficient flotation to do away with the necessity of wearing a life jacket

C

They should be tight fitting

D

A puncture in the suit will not appreciably reduce its value


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