单选题:一个质点做简谐运动,其位移2与时间t的关系曲线如图6—13所示,在t=4 S时,对质点运动状况,下面几种判断正确的是. 题目分类:物理化学综合 题目类型:单选题 查看权限:VIP 题目内容: 一个质点做简谐运动,其位移2与时间t的关系曲线如图6—13所示,在t=4 S时,对质点运动状况,下面几种判断正确的是. ( ) A.速度为正的最大值,加速度为零 B.速度为负的最大值,加速度为零 C.速度为零,加速度为正的最大值 D.速度为零,加速度为负的最大值 参考答案: 答案解析:
He plays squash to the __________ of all other sports. He plays squash to the __________ of all other sports.A.eradication B.exclusion 分类:物理化学综合 题型:单选题 查看答案
The school committee hoped that their choice of play would b The school committee hoped that their choice of play would be __________ with th 分类:物理化学综合 题型:单选题 查看答案
__________ human behavior may be caused by eating substances __________ human behavior may be caused by eating substances that upset the deli 分类:物理化学综合 题型:单选题 查看答案
Digital recording has made __________ a significantly wider Digital recording has made __________ a significantly wider dynamic range, in re 分类:物理化学综合 题型:单选题 查看答案