单选题As soon as the ship gets alongside the wharf, you should lower the gangway and put a （）below it.Asafety netBsafety beltCsafety lampDsafety device
单选题
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
参考解析
解析：
暂无解析
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