单项选择题
There is actually an overlap of（）ocean regions somewhere in Western European Waters.
A.as many as three B.more than two C.less than two D.up to four
单项选择题 There are（）operational satellites in the INMARSAT system covering the whole globe except the polar regions.
单项选择题 The satellites over the major ocean regions cover the globe（）.
单项选择题 In NAVTEX service, VITAL warnings will（）by transmitting station.
