压力换算kgcm2

What is the right question now? 已知f(x)为偶函数,且f(x)=cos（a）sinx-sin(x-（a）)+(tan（a）-2)sinx-sina的最小值为0,1、求 tan（a） 2、求f(x)的最大值以及此时x的集合.第一问我求出来是2 不知道是对的还是错的.第二问不太清楚.在 if ,whether 各自引导宾语从句的限制.希望回答能够尽量详细,提前谢谢您的奉献! 照片怎么不现实 把下列句子改成以if / whether 引导的宾语从句例如Example:Is it polite to point at people with chopsticks in China?A:I want to know whether/if it is polite to point at people with chopsticks in China.B:I don't think that it is polite to the small room is three time ___that big one.A.small as Bsmaller thanCsmall asDas small as 哪里有初学英语的磁带和书我想学学英语,我也没大接触过,不知道从哪下手, 六上英语书跟磁带读十五分钟能读多少页 英语翻译一行英文下吗接一行翻译!有这样的书吗?推荐几本!有磁带真人配音的!有好的我的分全部追加给你! I rise in the east,and it is day .I send my light into your room,and tell you it is time to get up. if 引导的宾语从句if引导的宾语从句和不定代词怎么用? the room is bigger than that one.that 只要one或that可以吗 但我学的又是文科.就是此题是这样的：有一束光L经过m（-1,2）射到x轴上再反射回去,求反射光的直线方程.我们老师说先找到m关于x轴的对称点（-1,-2）,说这个点一定在反射光这条直线方程上, 英语四种时态的比较! 英语四种时态是什么呀?再举几个例子（小学六年级） [急!]英语四种时态的构成形式一般现在时、正在进行时、过去时、将来时的构成形式 英语哪四种时态最常用? 非谓语动词表被动表被动语态的动词,是不是有两种形式?一个是 be+Ved 一个是直接用动词的过去分词 那么非谓语动词 表被动时该用哪一种形式? The room is two _as big as that one . 求一篇2010年寒假见闻.800-1000字.哎.上大学以来第一个寒假啊,过的实在平淡的很.实在想不出有什么有意义的见闻可以写.或者指点下可以深入挖掘的方向.我想不出往哪方面写啊. To tell you the truth,at that time I was very shocked that your child ____ have said such unkind words to his teacher.答案是should,我选的是could.为什么呢? marry,i should tell you ,it is the third time that you __your homeworka forgot to do b forgot doingc have forgotten to dod had forgotten doing If you shoot your mouth off like that one more time,I won't tell you anything in the future. 非谓语动词中的主动、被动问题1.There are five pairs to _____,but I'm at a loss which to buy .答案是“to choose from”,但我从逻辑主语等角度去看,怎么着都觉得应该是“to be chosen”.2.The tea is too hot to ____. 定语从句中,当先行词是一个句子的时候,关系代词应该用什么? 英语中any和any other的用法?My sister Mary swims faster than _______ student in her class.A.anyB.any ofC.any oneD.any other 答案是D请问为什么? 定语从句中介词后可跟的关系代词有什么 请教英语大师 any的用法, 谢谢!any后的可数名词 什么时候加S, 什么时候不加S , 谢谢!怎么记忆啊? paris法语怎么读写国际音标什么的好么 while traveling in France,he _______some everyday French.A.gave up B.picked up C.drew up D.got up选哪一个 德语名词的二、三、四格词尾怎样变化除弱变化阳性名词外,其他德语名词的二三四格怎样变化? 德语中性名词二格词尾 ,为什么有时候加s 有时候加es 到底怎么回事啊!