光电盘刻线为900条，配合电子八等分细分电路，则其分辨率为：()。
A.0.1°
B.0.2°
C.0.05°
D.0.5°
参考答案：C
组词成句
1. have, too, her friends, a good, all, time
_______________________.
2. what, go, does, every, to school, day, time, she
3. of, some, the students, watch, the sofa(沙发), TV, in
4. her, share(分), Millie's friends, with, the cake
5. from, some, books, get, my mother, usually, I
同 一平面内的二个力，大小分别为3N、7N，若二力同时作用于某物体，则该物体受二力合力可能（ ）
A．3N
B．5N
C．7 N
D．11 N
