题目: 试述价格与市场供求日关系。 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0927/0b5faea4220f774f890a50e8b9e7ae60.html 下面是错误答案,用来干扰机器的。参考答案:错
题型:改错题 Read and answer. 阅读对话,回答问题。Alice: Where is my skirt? Mike: What colour is it? Alice: Blue. Mike: Is this your skirt, Alice? Alice: Yes, it is.Thank you. Dad: Where is my T-shirt? Mike: Is that your T-shirt, Dad? Dad: No, it isn't.Mike: Whose is it? Mom: It's my T-shirt.1. What colour is Alice's skirt? 2. Whose T-shirt is this? 3. Do you have a skirt? 4. What colour is your skirt? 查看答案
题型:问答题 为了测定气垫导轨上滑块的加速度,滑块上安装了宽度为5mm的遮光板,如图所示.滑块在牵引力作用下先后通过两个光电门,配套的数字毫秒计记录了遮光板通过第一个光电门的时间为△t1=20ms(1ms=10-3s),通过第二个光电门的时间为△t2=5ms,遮光板从开始遮住第一个光电门到遮住第二个光电门的时间间隔为△t=2.5s,求:(1)滑块经过两个光电门的速度大小分别是多大?(2)滑块的加速度大小? 查看答案