Exchange 2000发布了几个版本？（） A: AEXCHANGE 2000高级版 B: BExchange 2000企业版 C: CExchange 2000标准版 D: DExchange 2000会议版 E: EEXCHANGE 2000用户版
Exchange 2000发布了几个版本？（） A: AEXCHANGE 2000高级版 B: BExchange 2000企业版 C: CExchange 2000标准版 D: DExchange 2000会议版 E: EEXCHANGE 2000用户版
When underway in a channel，you should if safe and practicable（）. A: Astay near the middle of the channel B: Bkeep to the starboard side of any vessels you meet C: Cexchange whistle signals with any other vessels in the channel D: Dkeep to the side of the channel which lies to your starboard
When underway in a channel，you should if safe and practicable（）. A: Astay near the middle of the channel B: Bkeep to the starboard side of any vessels you meet C: Cexchange whistle signals with any other vessels in the channel D: Dkeep to the side of the channel which lies to your starboard
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