题目3单选题
当温度t=1000摄氏度时,氮气分子的平均动能等于多少?()A. <img src="https://tihai-oss-cloud.itihey.com/img/513cd08fc6308d83998838ec573c4f0d.gif">B. <img src="https://tihai-oss-cloud.itihey.com/img/cecca56a1906db3a4c216e99233c3fa4.gif">C. <img src="https://tihai-oss-cloud.itihey.com/img/bef307783a5b3942cea5417955af6ad7.webp">D. <img src="https://tihai-oss-cloud.itihey.com/img/3b0ea185ba95c32984d17c5e9bb18644.gif">