試題詳解

47. Which of the following statements is TRUE?
(A) Solar Impulse 2 is going to achieve its goal of flying around the earth.
(B) The pilots are allowed to sleep for short durations while sitting in the passenger seat.
(C) Solar Impulse 2 is meant to promote the use of solar power.
(D) The two pilots have to deal with all the problems they encounter without any help.