One of the two systems established by GMDSS for the transmission and automatic receipt of Maritime Safety Information is______．A.Initial Distress Alerts serviceB.Navigational Warning serviceC.INMARSAT Safety Net serviceD.Meteorological Warning service
One of the two systems established by GMDSS for the transmission and automatic receipt of Maritime Safety Information is______．
A.Initial Distress Alerts service
B.Navigational Warning service
C.INMARSAT Safety Net service
D.Meteorological Warning service
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以下对枚举类型名的定义中正确的是______。A．enum a={one, two,three}；B．enum a{one=9,two=1，three}；C．enum a={"one"，"two","three"}；D．enum a{"one", "two"，"three"}；
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1、以下对枚举类型名的定义中正确的是（）。A．enum a={one,two,three};B．enum a {one=9,two=-1,three};C．enum a={"one","two","three"};D．enum a {"one","two","three"};
以下对枚举类型名的定义中正确的是（）。A．enum a={one,two,three};B．enum a {one=9,two=-1,three};C．enum a={"one","two","three"};D．enum a {"one","two","three"};