Which of the following is NOT a type of biofuel?

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发表于 2012-8-10 09:04:58 |只看该作者 |倒序浏览

试卷: LEED GA模拟题A[查看]
Which of the following is NOT a type of biofuel?
A: Vegetable oil
B: Wood chips
C: Geothermal
D: Soybean oil

参考答案: C

本题解释:
Geothermal energy comes from the ground
Notes:

Biofuels are made from organic material, such as animal and plant waste.