国考1号3化学答案

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应用文参考范文：Survey Report on Extracurricular ActivitiesRecently a survey has been done to find out the extracurricular activities of senior middle school students.In this survey,one thousand senior middle school students from ten schools in Hunan Province were interviewed.They were asked whatactivities they liked doing most in their spare time.The survey shows that more than half of the students like to watch TV or videos,and twenty-six percent of the studentsare most interested in electronic or computer games.However,the number of the students who enjoy doing sports doubles thatof those who prefer reading indoors.In my opinion,since the addiction to watching TV or videos or playing computer games is likely to do harm to children'shealth,parents should be responsible for limiting the children's time spent on passive leisure activities.In addition,moreemphasis should be attached to activities that can encourage children to build up physical health.

U5.D小球静止时qE=g=mg,由电路图可知两板之间的电压恒定，如果N板向上移动一小段距离，由E一可知两极板间的电场强度增大，则小球所受的电场力增大，小球将向上运动，选项A错误：如果M板向平移一小段距离，两极板之间的电场强度保持不变，则小球所受的电场力不变，小球仍保持静止不动，选项B错误；如果将两板绕过各自左端且与纸面垂直的水平轴线沿顺时针方向转过相同的小角度，则两极板之间的距离变为d=dosa,两极板之间的电场强度为E=c8。,则电场力沿竖直方向的分量为F=Eq9osagE,小球竖直方向的合力为零，小球沿水平方向向右运动，选项C错误，同理如果两板绕过各自左端且与纸面垂直的水平轴线沿逆时针方向转过相同的小角度，小球向左运动，选项D正确.