As soon as the ship gets alongside the wharf, you should lower the gangway and put a （）below it.<br>A:safety net<br>B:safety belt<br>C:safety lamp<br>D:safety device

As soon as the ship gets alongside the wharf, you should lower the gangway and put a （）below it.
A:safety net
B:safety belt
C:safety lamp
D:safety device

出自：船舶水手证

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