"A set of world-wide coverage of Admiralty Sailing Directions consist of ___.
A.1 volume
B.6 volumes
C.more than 70 volumes
D.about 34 volumes"
正确答案是C
"A set of world-wide coverage of Admiralty Sailing Directions consist of ___.
A.1 volume
B.6 volumes
C.more than 70 volumes
D.about 34 volumes"
正确答案是C