【判断题】曲线 所围成的图形绕 轴旋转一周所得旋转体的体积用定积分表示为:
【单选题】听力原文:Which one do you like,the first one or the second one? (2)
【简答题】在蛋白质合成中tRNA起_________的作用,mRNA起_________的作用。
【单选题】— Which sweater do you prefer, the yellow one or the pink one? — ______. I like a light blue one. [ ]
【判断题】餐饮服务提供者应当定期清理排水沟内的污物。()
【判断题】曲线 所围成的图形绕 轴旋转一周所得旋转体的体积是 。
【单选题】--- What kind of birthday cakes do you like? --- I like this one with strawberries. It ________ delicious.
【单选题】— Which do you like better, the red one or the blue one. — ____. I like the green one. [ ]