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【多选题】
ChemSketch 提供了聚合物结构的绘制功能,下列说法正确的有:
A.
在结构工具栏上点击 Polymers 键，出现聚合物面板后就可以进行如下设置的更改。
B.
通过点击或拖拽来选定产生聚合物的区域。当区域被选择 , 聚合物出现在工作区。
C.
再次点击 Polymers 键就可以离开聚合物绘制模式。
D.
在原子工具栏，点击 Pseudo Atom 键 。 点击结构的结束原子用空的原子替换他们。那么就可以得到一个无终止的聚合物了。
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