【单选题】配合物 Cr(O 2 ) 2 [NH(C 2 H 4 NH 2 ) 2 ] 中 Cr 的氧化态是 ( )
【简答题】My father and I stayed at the South Lake Hotel for a week when we visit Beijing last month. It is in the downtown area, but it is easy to go to anywhere from the hotel by public transport. We lived in...
【判断题】护士收集资料的目的是为了找出病人所患的有关病理资料。 ( )
【单选题】当市场调研人员分析问题时,除了亲自收集的资料外,先前为了一定的目的收集的资料也是一个重要的信息来源,这些资料被称为( )。
【简答题】Gao Wei to Beijing last month. (go) 2. My sister enjoys to music.(listen) 3. A: What did you do yesterday? B: I in a hotel by the sea.(stay) 4. We a big birthday party last week.( have) 5. That sounds...
【简答题】写出下列配合物的名称: (1) Na 2 [SiF 6 ] ; (2) [Pt(NO 2 )Cl 2 (NH 3 )(en)]Cl ; (3) [CoCl(NH 3 ) 5 ]Cl 2 ; (4) [Co(NH 3 ) 4 (H 2 O)Br]SO 4 ; (5) K 2 [Zn(OH) 4 ] ; (6) [Cr(OH)(C 2 O 4 )(en)(H 2 O)] 。