How is the image of the north polar cap of Mars? What is the summertime polar cap composed of?

admin2009-05-24  26

问题 How is the image of the north polar cap of Mars?
What is the summertime polar cap composed of?

选项 A、Dust.
B、Sand.
C、Water ice.
D、Volcanic rocks.

答案C

解析 见第一段最后一句Previous spacecraft observations have shown that this summertime polar cap is composed of water ice,just like Earth’s polar caps.
转载请注明原文地址:https://kaotiyun.com/show/FRYi777K
0

随机试题
最新回复(0)