喉（）

单项选择题关于刚体的转动惯量J, 下列说法中正确的是( ) A. 轮子静止时其转动惯量为零 B. 若mA>mB, 则J A>J B C. 只要m不变, 则J一定不变 D. 以上说法都不正确

单项选择题Find out the sentence that linking is used correctly and properly. (带下划线处表示连读)__ A. What is the answer to How are you ? B. What is the answer to How are you ? C. What is the answer to How are you ? D. What is the answer to How are you ?