VB4-G-1250A-31.5KA-E/DC 220V 真空断路器什么含义?是哪个厂的?E/DC 220V

VB4-G-1250A-31.5KA-E/DC 220V 真空断路器什么含义?是哪个厂的?E/DC 220V 图在这里1 求TA:TB2 aA ：aB3 VA:VB4 欧米嘎A：欧米嘎BA在圆锥尖 G a l e n阶矩阵A满足A^m=O证明对任意实数k,E+kA为可逆矩阵 n阶矩阵A满足A^m=O证明对任意实数k,E+kA为可逆矩阵. what is the molarity of a 30% (vol/vol) solution of H2SO4 (density of H2SO4=1.8g/ml)答案5.5Mwhich of the following acids is the weakest?A.HF kA=6.8*10的-4次方 B.H3PO4 kA= 7.5*10的负三次方 C.HNO2 kA=4.5*10的-4次方 D.CH3COOH kA=1.8*10 英语翻译hon to ni ho sii mo no wana ka a ka ki dsu i te mo ra e na iu mi no o to ka se no o to na mi no o to man tan no ho si ni i no ri wotsu na ga tte ho sii to ki ni ka gi tteki ma tte tsu na ga ra na i mo no da meda ka ra i ma mo koo si teki 已知函数f(x)=loga(x-ka)的定义域为A,g(x)=loga(x^2-a^2)的定义域为B求A∩B 9. NaAc固体加到HAc溶液中去,将使HAc的[ 1分] A.Kaθ变大B.Kaθ变小C.电离度增大D.电离度减小E.HAc—的水 NaAc固体加到HAc溶液中去,将使HAc的[ 1分] A.Kaθ变大B.Kaθ变小C.电离度增大D.电离度减小E.HAc—的水? a,e,t,r,g组成词语 g r p a e 拼词 a()b c d e f g A B C D E F G a b c d e f g A B C D E F G 单词重组：a,g,r,e,l. G R E A T great是什么意思