arcsin1x的导数

在一次数学活动课上,胡老师带领九（3）班的同学去测一条南北流向的河宽.如图所示,张一凡同学在河东岸点A出测到河对岸边有一点C,测得C在A的北偏西31°的方向上,沿河岸向北前进21m到达B处, 英语连词成句题, 连词成句 are parents what like your(?) 是What about your parents.还是What are your parents是What about your parents. 还是What are your parents. 你的父母还好吗 分析一朝被蛇咬,十年怕井绳的心理机制一定要运用“经典条件作用原理”分析此现象! what are your parents doing right now?标题这句英语是“你父母是干什么的?”的意思?doing right what are your parents 的中文意思 能够运动的物体就一定是生物 能运动的物体就一定是生物吗 When are you going when are you going?怎么回答 When are you going? when are you going的汉语是什么 橡胶软接头需要加法兰吗 电磁流量计可以直接和法兰、橡胶软接头连接吗?工地上要用到电磁流量计,现在管道都已经铺设在地下了,没法再拉伸,如果直接把电磁流量计和管道进行连接肯定没法特别吻合,会有一点间隙, look,these ( )are so nice ,one is black ,the other is white.A,some sheepB,two sheep C,any sheep D,much sheep they both study very hard 同义句转换they both study very hard ( ) ( ) ( ) study very hard. One part has a blackboard and some desks.The other is for r_____. 英语翻译If you travel around China you will notice a very popular activity everywhere you go--basketball.This much-loved and active sport is enjoyed by many,for fun and exercise.The sport of basketball is a little over a hundred years old.It is p 英语翻译不用太标准,大意是对的,看得懂就行 a vacation 前用on还是for 连词成句to with go is you who going 英语求助on trip on vacation for vacation各自不同的用法?有没有用in的? It is going to rain.--------a raincoat with you when you go to school 怎么填 She goes to Hong Kong by plane.有错吗 She goes to Hong Kong by plane（用Where提问） 连词成句 great,are,both,cooks,they 英语翻译要标准的!逐字逐句的翻译! 军加耳刀旁读什么啊 且吾所以还军霸上,待诸侯至而定约束耳 文言文翻译,急需急需啊 问个字,军耳字旁这个字念什么?问个字一个军这边一个耳字旁念什么? 英语翻译