【简答题】指出下列各配位化合物中配位单元的空间结构,并写出其有几种几何异构体。 ( 1 ) [Cr(NH 3 ) 3 (H 2 O) 3 ]Cl 3 ( 2 ) [Co(NH 3 ) 2 (en) 2 ]Cl 3 ( 3 ) [Cr(H 2 O) 4 Cl 2 ]Cl · 2H 2 O ( 4 ) [Pt(NH 3 ) 2 (OH) 2 Cl 2 ] ( 5 ) [Pt(NH 3 ) 2 BrCl] ( 6...
【单选题】John is very interested in computer technology.
B.
how much computers cost
C.
how popular computers are
【简答题】指出下列各配位化合物中配位单元的空间结构,并写出其有几种几何异构体。 ( 1 ) [Cr(NH 3 ) 3 (H 2 O) 3 ]Cl 3 ( 2 ) [Co(NH 3 ) 2 (en) 2 ]Cl 3 ( 3 ) [Cr(H 2 O) 4 Cl 2 ]Cl · 2H 2 O ( 4 ) [Pt(NH 3 ) 2 (OH) 2 Cl 2 ] ( 5 ) [Pt(NH 3 ) 2 BrCl] ( 6...
【单选题】--- Is this_____ computer game? --- Yes, _____ is. It’s _____ computer game.
【单选题】46 岁男患间断上腹痛2年,空腹明显,进食缓解,近1周大便色黑,无呕血(请按此病例依次回答1-5题)该患者最可能的诊断是:
【单选题】[Pt(NH3)2BrCl]有几种几何异构体?
【单选题】John used to be such a computer buff that he spent a large part of his income ______ his computer whenever a new CPU was introduced.
【单选题】纳税人建造普通标准住宅出售,增值额未超过扣除项目金额20%的,免征土地增值税;如果超过20%的(含20%),应就超过增值额20%的部分按规定计税。( )
【简答题】免征额是课税对象中免于征税的数额,对有免征额规定的课税对象,只就其超过免征额的部分征税。( )