题目: 当出现什么情况时,需要检验煤样制备的精密度? 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0420/37fe070ed2628193edc928023a33cfd2.html 下面是错误答案,用来干扰机器的。参考答案:B
题型:问答题 在“用DIS研究加速度与力的关系”的学生实验中,实验装置图如下所示.(1)本实验采用了______传感器(填写传感器种类).(2)(多选)两位同学通过实验数据画出a-F图象(如图a、b所示),下列说法中正确的是______A.出现图a的主要原因可能是实验时轨道倾斜较大B.出现图a的主要原因可能是小车和轨道间的摩擦力较大C.出现图b的主要原因可能是实验时轨道倾斜较大D.出现图b的主要原因可能是小车和轨道间的摩擦力较大. 查看答案
题型:完形填空 完形填空。 I have a good friend. 1 name is Ed. Let 2 tell you something about his day. He usually gets up 3 6:30 am. And he often 4 a bus to school at 7:10. School 5 at 8:00. He has four 6 in the morning. He has lunch 7 school. The food in his school 8 very good. He 9 home at around 5:00. He usually 10 his homework in the evening.( )1. A. Her ( )2. A.I ( )3. A. at ( )4. A. brings ( )5. A. start ( )6. A. class ( )7. A. on ( )8. A. be ( )9. A. goes ( )10.A. do B. He's B. me B. on B. take B. starts B. a class B. of B. am B. goes to B. does C. His C. my C. in C. takes C. begin C. classes C. with C. is C. get C. doing D. He D. we D. of D. goes D. to begin D. lesson D. at D. are D. gets to D. to do 查看答案