"The coverage range of AIS is slightly better than radar due to ___.
A.the longer wave length
B.the shorter wave length
C.the high frequency
D.the low antenna"
正确答案是A
"The coverage range of AIS is slightly better than radar due to ___.
A.the longer wave length
B.the shorter wave length
C.the high frequency
D.the low antenna"
正确答案是A