题干
Nick is looking for another job because he feels that nothing he does ________ his boss.
A：satisfie
B：admire
C：obey
D：support
答案(点此获取答案解析）
A
的斜面，让小物块以相同的初速度沿板上滑。若小物块与木板之间的动摩擦因数为
，则小物块上滑到最高位置所需时间与t之比为
