________________________________The BBC has learned that the signals were received by a satellite company based in London. A BBC correspondent says there is no way they could have been sent unless the plane was intact and had power. He said the information should make it possible to calculate an approximate position for the aircraft. __________________________________BBC了解到,这些信号被一家总部位于伦敦的卫星公司接收.一名BBC记者称,这些信号只有在飞机无损和电力正常的情况下才能发射出来,他认为有可能根据这些信号来推测出飞机的大概位置.
