设实对称矩阵A是正定的，证明A的伴随是正定矩阵

i saw you walking in the rain 这一句话的中文是什么意思 笔记本开机时会显示“warning:the battery cannot be identified…”我要按任意健才能继续.怎么回事?我把电池下了,直接用电源就不会出现这个提示,但是电池照样可以充电还是可以用的啊,升级BIOS我也 笔记本出现the battery connot be identified,this systen will be unable to charge this battery什么原 DV开机几秒就提示cannot use this battery in the camcorder.怎么回事,是SONY的 我直接供电也提示这种错误,关键是电池一直用这个啊 本来是不开机了,后来整开机了就提示这个问题,郁闷!遇到过的朋友帮 the battery cannot be identff sleep--or rather dream--on it and you 'll feel better in the morning.翻译05t3 What does the word“globe”mean in Chinese?A地球仪 B地球照片 C地球形状 D地区分布图急 D major是什么 Mother-daughter Day i got a 什么 as a birthday present from my mother last year. in fact＝? 是第三小题,后面接着是day present.(对画线部分提问) after that后为什么加一般过去时 AFTER加一般过去时,主句加什么时态?例如the doctor [ ](help)the injured soldiers after he got well 用英语回答What can you do online?用英语回答这个问题 用英语回答What can you do online? "沉着"一词有哪几种意思.是什么词性. ease of 请问ease of communicate是什么意思 I'm an atom in a sea of nothing是什么意思 No...i don´t afraid of nothing- I´m ignorant, 改错：i'd like go to your home,but i don't know what to call your father 英语翻译在金秀贤亚洲巡演中国粉丝见面会上出现的翻译姐姐是谁 英语介词固定搭配怎么记? 应该怎样记一些介词的用法? 表达对某事的关心,Concern+介词,介词有很多种选择,什么区别啊?concern about/with/for/of/to 我看到这么多种而且都是词典上的例句 有什么区别吗?concern作名词 怎么选择Stage Battery Charge? At a birthday party,a student ate a piece of cake (food energy value of 400 calories).To prevent this energy from being stored as fat,she decides to drink ice water at 0 C.She reasons that the ingested ice water will be warmed up to her normal body t charge battery是什么意思 Connect to charge the battery and transfer Congratulations on your promotion 这里的congratulation为什么要加S 过去时中 see是加do还是doing?