()service means a service which is based on polar orbiting satellites which receive and relay distressalerts from satellite EPIRBs and which provides their position . A: Geostationary satellite B: Near-polar orbiting satellite C: synchomizing satellite D. D: Terrestrial satellite

34. Cospas-Sarsat comprises a several near polar orbiting satellites and一． A: a network of land based earth stations B: several coast stations C: an earth station D: some RCCs

Unlike the American GPS, Russian GLONASS, and European Galileo systems, which use median Earth orbit satellites, BeiDou-1 uses satellites in （ ）. A: Geostationary orbit B: Circular orbit C: Sun-synchronous orbit D: Near polar orbit

By saying "Spring is usually prime food time for 1,200 polar bears" ( Line 1, Para. 1 ), the author means that ______. A: spring is usually a good time for polar bears to carry out their mating rituals B: the polar bears usually eat a lot in the spring C: spring is generally a good time to hunt polar bears D: polar bears usually hibernate in the spring

How is the future of polar bears?

It'simportanttohavepeopleinyourlifewhoare______toyou.? near and dear|dear and near|fear and near|fear and dear

The Arctic fox is found throughout the Arctic, usually on tundra or mountains （）the sea. A: by which near B: near of C: because near D: near

下列关于检索运算符优先级顺序排列正确的是 ( ) A: near/x>; not >; or >; same >; and B: near/x >; same >; not >; and >; or C: and >; not >; same >; near/x >; or D: not >; and >; near >; with >; or E: not >; near/x >; same >; or >; and

Due to global warming, thefor polar bears is shrinking, causing the number of polar bears to keep decreasing. A: habit B: habitat C: apparatus D: habitant

9.We only had $100 and that was_____to buy a new computer. A: nowhere near enough B: near enough nowhere C: enough near nowhere D: near nowhere enough