如图1所示,工人沿斜面把一箱货物从底端拉进车厢,货物移动的距离s与时间t的关系如图2所示,在此期间,工人拉这箱货物沿斜面匀速运动时的拉力为594N,此斜面的长为5m,高为1m,这箱货物重为1500N.
请你以“尊严”为话题写一篇文章。除诗歌外文体不限,题目自拟。不少于600字。
(﹣12)2的平方根是( )
某火力发电厂建厂几年后,原来附近绿茸茸的苔藓植物不见了,其主要原因是( )
STUDY ENGLISH IN AMERICA
Country
Tina comes from ____.
Weekend Activity
Tina visits____ on Sundays.
Location
Tina's host family is in a ____ area.
TV Program
Tina always watches____ in the evening.
Study Time
Stay for ____ and study English as Tina does!