A:1 011(2)
B:11 011(2)
C:10 110(2)
D:0 110(2)
我们看着宇宙飞船外随着地心引力的增加,突然燃起了火,我们感到很惊奇。
We watched, ____ ____ ____ ____ ____ on the outside of the spaceship as the earth's gravity increased.
如图,∠AOB=90°,C、D是的三等分点,AB分别交OC、OD于点E、F,求证:AE=CD.
某块砖在一对平衡力作用下运动,则该砖()
-- Ross, can I use your computer to do my homework?
-- Sorry, I don't have _______.