题干
Have you seen the house opposite the railway station?
A：at the end of
B：in the middle of
C：on the other side of
答案(点此获取答案解析）
C
Have you seen the house opposite the railway station?
A：at the end of
B：in the middle of
C：on the other side of
的斜面体B上，斜面体B的质量为M，现对该斜面体施加一个水平向左的推力F，使物体随斜面体一起沿水平方向向左匀速运动的位移为L，则在此匀速运动过程中斜面体B对物体A所做的功为 ( )