The third officer should often check the number of life-saving signals, validity and status.
三副应当经常检查救生信号的数量，有效期和状况。
The forms of electronic contracts directly effect their validity and evidence status.
合同形式直接影响了合同的效力和证据地位。
The format of electronic contracts directly affect their validity and legal status.
合同形式直接影响合同的效力和证据地位。
The format of electronic contracts directly affect their validity and legal status.
合同形式直接影响合同的效力和证据地位。
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