单选题ECDIS对于电子海图数据及其更新,应满足以下基本要求()。 ①所使用的数据必须是经政府或政府授权的主管机关发行的符合IHO最新版本标准的数据。 ②ENC数据的内容必须无法被更改 ③ENC数据不必与其更新数据分别存储 ④ECDIS应该自动保存ENC更新的记录,包括自动更新SENC数据的时间。A①②③④B①②④C②③④D①②③
单选题
ECDIS对于电子海图数据及其更新,应满足以下基本要求()。 ①所使用的数据必须是经政府或政府授权的主管机关发行的符合IHO最新版本标准的数据。 ②ENC数据的内容必须无法被更改 ③ENC数据不必与其更新数据分别存储 ④ECDIS应该自动保存ENC更新的记录,包括自动更新SENC数据的时间。
A
①②③④
B
①②④
C
②③④
D
①②③
参考解析
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