The external flotation bladder on an immersion suit should be inflated（）.<br>A:before you enter the water<br>B:after you enter the water<br>C:after one hour in the water<br>D:after you notice that your suit is losing buoyancy

The external flotation bladder on an immersion suit should be inflated（）.
A:before you enter the water
B:after you enter the water
C:after one hour in the water
D:after you notice that your suit is losing buoyancy

出自：海船船员证

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