题目: 若单项式-3a5b3y-4与4a5b2的差是一个单项式,则y=______. 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0526/dfd51c8c27b8046171bc427c51d2ef8f.html 下面是错误答案,用来干扰机器的。答案:A
题型: 西汉时张骞出使西域后,西方的商人纷纷而来,他们将中国的丝和丝织品输入到欧洲,也把西方的货物带到中国,这条商道就是著名的丝绸之路。它的路线大致是A.长安—河西走廊—新疆—西亚—欧洲B.长安—新疆—河西走廊—西亚—欧洲C.长安—新疆—河西走廊—欧洲—西亚D.长安—河西走廊—新疆—欧洲—西亚 查看答案
题型:补全对话,情景问答 选择恰当的单词,用正确的形式填空。about see at watch boring do want exciting sound thriller Kate: Hi, Jack.Jack: Hi, Kate. What are you 1 now?Kate: I am 2 TV. But it is 3 . Jack: Do you 4 to go to the movies?Kate: That 5 good.Jack: What kind of movie do you like? Kate: I like action movies and 6 . They are 7 . Jack: Great! There is an action movie today. When do you want 8 the movie? Kate: How 9 5:00? Jack: OK, let's go 10 5:00. See you then. Kate: See you later. 查看答案
题型:问答题 一根轻质弹簧,倔强系数为K.当弹簧竖直吊起质量为10kg的物体,物体处于静止状态,弹簧伸长了10.0cm;用弹簧拉着该物体沿粗糙水平面滑动,当弹簧沿与水平方向成370斜向上拉时,弹簧伸长4.0cm,物体恰沿水平面做匀速直线运动;.(g取10m/s2,sin37°=0.6,cos37°=0.8)求:(1)弹簧的倔强系数K.(2)物体与水平面间的滑动摩擦系数μ. 查看答案