如图所示轮子O点为固定铰支座约束，受力<img src="/Image1/77/777fd5d0a59de9d95b52a70a022142a4.png" />和力偶矩为m的力偶作用而平衡，下列说法正确的是（）。 <img src="/Image1/9a/9a55f9f21a2d610c3480a6276cc88150.png" /><br>A:力<img src="/Image1/77/777fd5d0a59de9d95b52a70a022142a4.png" />和力偶矩m相平衡<br>B:力<img src="/Image1/77/777fd5d0a59de9d95b52a70a022142a4.png" />和轴承o处反力组成的力偶与轮上的力偶相平衡<br>C:力<img src="/Image1/77/777fd5d0a59de9d95b52a70a022142a4.png" />对点o之矩和力偶完全等效<br>D:力<img src="/Image1/77/777fd5d0a59de9d95b52a70a022142a4.png" />和力偶虽然不等效，但它们可以使轮子平衡