"Lists of Meteorological Observation Station(NP284) and associated diagrams are published ___.
A.annually
B.semiannual
C.biennial
D.none of the above"
正确答案是D
"Lists of Meteorological Observation Station(NP284) and associated diagrams are published ___.
A.annually
B.semiannual
C.biennial
D.none of the above"
正确答案是D