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【单选题】
某配和物化学式为CrCl3 ·4NH3 ,在1mol该配合物溶液中,加入过量的AgNO3 发现生成1mol的AgCl沉淀,若在该配合物的溶液中,加入浓NaOH溶液,并加热没有氨逸出,该配合物的组成为A.
Cr(NH3)4Cl3
B.
[Cr(NH3)4]Cl3
C.
[Cr(NH3)3 Cl3 ]NH3
D.
[Cr(NH3)4Cl2]Cl
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【多选题】Please hand in your completed by October 30th. 2.The manager was very busy. He got a very full . 3.She got a(n) of 79 in the test. 4.I suggest we over the details and get to the point. 5.People say I ...
A.
assignments
B.
schedule
C.
grade
D.
skip
E.
sort of
F.
miss
G.
due date
H.
dormitory
I.
volume
J.
concentrate
【简答题】Watch the video and fill the following blanks with the missing sentence. 霸王龙的忧伤.mp4 I 1 . 2 . You should feel alive. You think 3 , then one day, boo, 4 , two days. The once King-rex. Well, 5 I lost th...
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【单选题】在 Word 软件中，下列不能建立一个新文档的操作是（ ）
A.
打开“文件”选项卡，选择“新建”
B.
按快捷键“Ctrl+N”
C.
在桌面空白处单击右键，选择“新建”→“Word 文档”
D.
在菜单中选择“新建”→“打开”
【简答题】霸王龙的忧伤.mp4 Watch the video and fill the following blanks with the missing sentence. I 1 . 2 . You should feel alive. You think 3 , then one day, boo, 4 , two days. The once King-rex. Well, 5 I lost th...
【简答题】Watch the video and fill the following blanks with the missing sentence. 霸王龙的忧伤.mp4 I 1 . 2 . You should feel alive. You think 3 , then one day, boo, 4 , two days. The once King-rex. Well, 5 I lost th...
【简答题】句 子翻译 1. If we are right in regarding as a daydream the story made by him, there is no further need to apologize for rejecting it. 2. Her tired body told her that it was ready to sleep. 3. His additio...
【简答题】Direction: Change these passive voice sentences into direct expressions in the active voice. 1. The property evaluation was performed by the municipal authority. 2. A gain of 25 percent was reported f...
【单选题】测土壤速效钾时,土样在 100ml 三角瓶中振荡 30min 后,用滤纸过滤,过滤时振荡土样的三角瓶 用蒸馏水冲洗并全部过滤。
A.
需要
B.
不需要
C.
无所谓
D.
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