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Silence is afraid of excuses Silly smile is in justice of reason c（H2SO4）=0.1moL/L那么c（1/2H2SO4）等于多少我在检测锅炉水的碱度时是按照0.1moL/L算还是按照0.21moL/L算 c(1/2H2SO4)与c(H2SO4)之间的关系?例如：若c(1/2H2SO4)=1mol/L,则相当于c(H2SO4)=?我只知道：c(H2SO4)=1mol/L的溶液中,c(H+)=2mol/L ,c(SO4)=1mol/L那么c(1/2H2SO4)=1mol/L的溶液中,c(H+)=?,c(SO4)=? 翻译.She also found children didn't ( ) to play with her daughter c（1/2H2SO4）＝1mol/L与c（H2SO4）＝1/2mol/L的溶液,其浓度完全相等 为什么是错的 She also worked hard to make （ ）（ ） （ ） （ ）（ ）agree not to use them.汉译英她努力劝说尽可能多的国家同意不使用它们（地雷） 正常人的视力多少.战在平地上能看多远..别说什么度数几点几...我说的是有效的视力范围是周围半径多少米.. 视力正常的人多远距离内可以看清别人的脸?是要非常清楚地看到哦 清清楚楚!包括脸上的豆豆 ,毛孔粗不粗都可以看到的那种!一定是视力正常的人哦! you want a piece of me? i see a piece of me in him.的中文意思? 已知在圆O中,CD为直径,AB是弦,AB⊥CD于M,CD=15cm,若OM:OC=3:5,则AB=（ ） MY PERSISTENT ONLY FOR YOU STAN 1,圆心o中,CD为直径,AB是弦,点D是弧AB的中点,CD=15cm,OM：OC=3：5,求AB长.2,圆心o中,弦AB与CD交与点P,试证PA.PB=PC.PD 男人要怎样才算美?给个标准吧~鼻子要多高多挺?眼睛到眉毛的距离是多少才算完美?嘴唇要多少厘米厚?两眼距离多少?人中多长?脸的轮廓要怎样? 看书时眼睛距离书的距离最好是多少厘米?A.33cm B.20cm C.50cm D.25cm?到底是多少? _________ David says sounds right to Helen.That’s why she has made up her mind not to leave him________ happens.A.whatever; whatever B.No matter what; whatever C.No matter what; no matter what D.Whatever; however ___david says sounds false to helen.that is why she has made up her mind to leave him __happensA,whatever;however B.however;whatever C.no matter what;whatever D.whatever;whatever理由；翻译；谢谢！ ____david says sound right to Helen.that's why she has made up her mind to l第一个为什么添whatever ___ David says sounds right to Helen. That’s why she has made up her mind to leave with him___ happens.选项: a、whatever/whatever b、 No matter what/whatever c、 No matter what/ No matter what 为什么选B?请分析并翻译整句 Helen made many mistakes in the maths test She realised that ___important to be careful.A was it B was there C it was D there was 要说明 老花眼的明视距离小于正常眼的明视距离吗? 正常人眼睛的明视距离为25厘米,小明的视力正常.当他用镜子仔细观察脸时,他应把镜子拿到离眼睛____厘米最合适. 关于眼睛的说法下列说法正确的是：1、明视距离是指正常眼睛看物体最清楚的距离2、平行光线汇聚在正常眼睛的视网膜之前3、近视眼佩戴合适的眼睛后,能把镜前的平行光汇聚在视网膜上, A-GPS 和GPS的区别 A friend says she hasn't got much money.Nor have you.How do you agree? A friend says he/she hasn't got much money.nor have you .how do you agree she has no question to ask from her 还有no question asked. 现在有两个物体做匀变速直线运动,甲的加速度为-3m/s^2,乙的加速度为2m/s^2,则正确的是1.甲物体一定做减速运动2.甲物体比乙物体速度变化快3.乙物体比甲物体速度变化快4.乙物体加速度方向与 在水平地面上有一个质量为m的物体,它受到水平恒力F的作用后,由静止开始运动,经过时间t后撤去恒力F又经过t物体恰好停下来,则物体受到摩擦力的大小为多少!, 什么是A-GPS?与GPS有什么区别 地球上的水有限么有一道题说,蒸馏水是纯净物,地球上的水有限.（题目上说只有一个对） 做匀变速直线运动的物体,加速度大小a=3m/s²“第5s内的位移与第4s内的位移之差等于3m” 这句话对吗