99色精品-9色在线-99色在线-99色视频国产欧美日产一区二区三区_亚洲精品亚洲人成在线观看_四虎在线精品永久观看_免费一级a一片久久精

<dl id="kab4a"></dl>

單項(xiàng)選擇題

（）is capable of finding any 406MHZ beacons no matter where they are.

A.Local User Terminal
B.Spacecraft
C.Local-mode coverage
D.Near polar orbiting satellites

你可能感興趣的試題

單項(xiàng)選擇題

The COSPAS-SARSAT 406MHZ system was adopted as an element of the GMDSS by IMO in（）.

A.1992
B.1980
C.1984
D.1988

單項(xiàng)選擇題

COSPAS-SARSAT has the function of（）.

A.distress alerting
B.communication
C.broadcasting MSI
D.on-scene communication

<abbr id="8ssjm"></abbr>

<ruby id="8ssjm"><xmp id="8ssjm"></xmp></ruby>