【判断题】组织市场对产品和服务的需求总量受价格变动的影响较小。 A.正确 B.错误
【判断题】《史记》中记载的“山东”指的是今天的山东省。()
【多选题】金蝶K3/ERP系统中,用户的授权方式包括( )
【单选题】下列滴定能准确进行的是
A.
0.1mol/LNaOH 滴定 0.1mol/LNH 4 Cl(NH 3 的 pKb=4.7)
B.
0.1mol/L NaOH滴定0.1mol/L Na 2 HPO 4
C.
0.1mol/L HCl滴定0.1mol/L (CH 2 ) 6 N 4 (pKb=8.8)
D.
0.1mol/L HCl滴定0.1mol/L NaCN(HCN的pKa=9.4 )
【单选题】His parents hired a private tutor to help him improve his academic ______.
【简答题】Michael was a farmer in Texas.His parents moved to the USA from Ireland in the 1940’s, and they became very rich.Michael decided to go back to Ireland to meet his old grandfather, who was still living...
【单选题】1997年5月,著名的“人机大战”,最终计算机以3.5比2.5的总比分将世界国际象棋棋王卡斯帕罗夫击败,这台计算机被称为
【单选题】下列滴定能准确进行的是( )
A.
0.1mol/L HAc滴定0.1mol/L NH 3 ×H 2 O
B.
0.1mol/L HCl滴定0.1mol/LNaAc (HAc的pK a =4.75)
C.
0.1mol/LNaOH滴定0.1mol/L H 3 BO 3 (H 3 BO 3 的pK a =9.4)
D.
0.1mol/LHCl滴定0.1mol/LKCN (HCN的pK a =9.3)
【简答题】Michael was a farmer in Texas. His parents moved to the USA from Ireland in the 1940’s, and they became very rich. Michael decided to go back to Ireland to meet his old grandfather, who was still livi...
【简答题】组织市场对产品和服务的需求总量受价格变动的影响 。