"The blind area or shadow area in a marine radar can not be determined by ___.
A.the size of the antenna
B.the size of the obstruction
C.the proximity to the aerial site
D.the operator's skills"
正确答案是D
"The blind area or shadow area in a marine radar can not be determined by ___.
A.the size of the antenna
B.the size of the obstruction
C.the proximity to the aerial site
D.the operator's skills"
正确答案是D