【多选题】关于悬臂梁的最大变形,下列说法正确的有()。
A.
在其他条件相同的情况下,与材料的弹性模量E成正比
B.
在其他条件相同的情况下,与材料的弹性模量E成反比
C.
在其他条件相同的情况下,与截面的惯性矩I成正比
D.
在其他条件相同的情况下,与截面的惯性矩I成反比
E.
在其他条件相同的情况下,与构件的跨度L的n次方成正比
【简答题】An experimental solar-powered plane landed safely Thursday after completing its first 24-hour test flight, proving that the aircraft can collect enough energy from the sun during the day to stay aloft...
【判断题】Solar plane is never going to fly passengers.
【简答题】Recently,a solar powered(太阳能动力的)plane took to the sky for the first time. It had passed an important test on the way to travel around the world. The plane took off from an airport in Switzerland(瑞士)at...
【判断题】Solar plane is experimental for the moment.