(1.5 分)
Which of the followings is a CORRECT statement?
A.ENC is the raw data of the Electronic Nautical Chart and it may be changed by ECDIS manufacturer for speed and reliability. B.The database of an Electronic Nautical Chart System is compacter and the speed of the system is faster than those use voluminous data. C.ENC is a kind of voluminous raster data, while the SENC is a kind of vector data. D.SENC is the raw data of the Electronic Nautical Chart and it may be changed by ECDIS manufacturer for speed and reliability.正确答案B
