A:将集气瓶倒扣在水中
B:将澄清石灰水倒入集气瓶中
C:观察气体颜色
D:将带火星的木条伸入集气瓶中
—China's first large passenger plane C919 flew successfully on May 5.
—Yes. What's more, it was built on our own in Shanghai.
据报道目前用超级计算机找到的最大质数是2859433-1,这个质数的末尾数字是( )