50um等于多少mm

I can keep the chichens for their eggs or eat them.意思急用! I can keep the chicken for their eggs or eat them.是啥意思?这句话是谁麽意思,知道的人快回答, reservation hotel reservation是什么意思 一年四季开花的花卉有哪些 She is used to washing hands before dinner 改为否定句She （ ）（ ）（ ）（ ） hands before dinner 生长在北方,一年四季都开花,花朵很小,请问花的名字 写人跳舞的场面的作文快一点 _______or drink in the library. 一年四季各盛开的花是什么花 设P（x,y)是椭圆x^2/a^2+y^2/b^2=1（a>b>0）上任意一点,F1为其左焦点,求|PF1|的最大值最小值 如下图所示,空间四边形ABCD满足AB垂直CD,BC垂直AD,求证AC垂直BD 等比数列{an}中的各项均为正数,且a5a6+a4a7=18,则log3a1+log3a2+...+log3a10=由于{an}为等比数列则:a5a6=a4a7=a3a8=a2a9=a1a10又a5a6+a4a7=18则:2a5a6=18a5a6=9则:log3(a1)+log3(a2)+...+log3(a9)+log3(a10)=log3[a1*a2*a3*...*a10]=log3[(a1a 词语 蹈 已知圆C和y轴相切,圆心在直线x-3y=0上,且被直线y=x截得弦长为2倍更号7,求圆C的方程 关于歌舞的诗句 速求! Repeat the sentence after me.句中after是介词吧?还是副词?after me结构是修饰sentence还是repeat? 英语速解 god,after god,me... 26 一年四季都盛开的花是什么花? 恐 怖 的 反 义 词准确点、一定要正确 继续 反 义词 名词和主谓一致1.The dances looked so charming in their beautiful clothes that we took ( )pictures of themA. many of B.masses of C.the number of2.No one in the department but Tom and I ___ that the director is going to resign.A.knows B.know 星座彼氏AFTER~SPRING~请问预告要出的AFTER们,比如AFTER SPRING/SUMMER/AUTUMN/WINTER...是以什么形式?我知道是游戏+CD,但是游戏是PC的吗?还是会PSP上的? 名词和主谓一致英语题what we used to think__impossible now does seem possiblea.is b.wasc.has beend.will be2.the company had about 200 computers but only one-third __used regularlya.is b.arec.wasd.were3.he found a lot of__were__a.passers-by,g 响尾蛇是不是蛇类里面唯一能发响声的品种呢?还有没有其它能发响声的蛇吗? 请问谁知道在哪下? 新视野大学英语泛读教程有听力光盘的吗如题 集体名词的在主谓一致中的单复数怎样区分 有哪些关于生命的词语?最好是4字成语 世界上最毒的蛇类 please make a new dress for me同义句