问题描述：
[单选]
宇宙飞船在一颗直径2 ．2千米,平均密度2 ．2克/立方厘米的小行星上着陆,这颗小行星在缓慢的自转,宇航员决定用2 ．2小时的时间沿着这颗小行星的赤道走一圈,他们的这种想法是否能够实现？A spaceship landed on an asteroid 2 ．2 km in diameter with an average density of 2 ．2g/cm3 ． The asteroid is slowly rotating． The cosmonauts decided to travel along the equator of the asteroid in a rover in 2 ．2 hours． Will it be possible for them to do such a thing
A．能
B．不能
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