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救生艇下水每隔三个月进行一次。（）
- A、Lifeboat launching is operated at intervals of three months.
- B、Lifeboat launching is operated at intervals for three months.
- C、Fire drill is carried out once a month.
- D、Don’t operate two or more hatch covers at the same time.
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更多 “救生艇下水每隔三个月进行一次。（）A、Lifeboat launching is operated at intervals of three months.B、Lifeboat launching is operated at intervals for three months.C、Fire drill is carried out once a month.D、Don’t operate two or more hatch covers at the same time.” 相关考题
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Lifeboat launching is operated at intervals of three months.B
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Lifeboat equipment shall be examined at least once each month to insure that it is completeD
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