8
A. Theycaptureenergyfromdeepseaoil.
B. Theyaremuchbiggerthanwindturbines.
C. Theycaptureenergyfromtidalcurrents.
D. Theyaremuchlighterthanwindturbines.
9
A. Safe.
B. Clean.
C. Productive.
D. Predictable.
10
A. 15%inEurope.
B. 20%inEurope.
C. 25%inEurope.
D. 75%inEurope.
遥感数字图像以二维数组来表示,在数组中,每个元素代表一个像素,像素具有空间特征和。