When a vessel is alongside the wharf, it’s necessary for the ship to keep a （）hour gangway watch to guarantee the safety of the ship and the cargo.
- A、12
- B、8
- C、24
- D、48
正确答案:C
答案解析:有
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When a vessel is alongside the wharf, it’s necessary for the ship to keep a （）hour gangway watch to guarantee the safety of the ship and the cargo.
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