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操作技能的模仿必须在定向的基础上进行
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【简答题】(12分)A、B、C是三种常见短周期元素的单质。常温下D为无色液体，E是一种常见的温室气体。其转化关系如图(反应条件和部分产物略去)。试回答： （1）E的电子式是 。 （2）单质X和B或D均能反应生成黑色固体Y，Y的化学式是 。 （3）物质Z常用于对空气进行杀菌、净化和水果保鲜等。Z和B的组成元素相同，Z分子中各原子最外层电子数之和为18。Z和酸性碘化钾溶液反应生成B和碘单质，反应的离子方程式是 ...
【判断题】For Vincent, the state is the main actor of international society, so states should respect each other’s sovereignty and adhere to the principle of intervention.
A.
正确
B.
错误
【判断题】The Treaty of Paris signed in 1783 acknowledged the independence, freedom and sovereignty of the 13 states.
A.
正确
B.
错误
【判断题】The peace treaty was signed in 1776, in which the independence, freedom and sovereignty of the 13 states were acknowledged.
A.
正确
B.
错误
【单选题】Which contains a similar provision guaranteeing the sovereignty of States and their responsibility to maintain law and order, national unity and territorial integrity by all legitimate mean? ( )
A.
Article 2of Additional Protocol II
B.
Article 4 of Additional Protocol II
C.
Article 3 of Additional Protocol II
D.
Article 3 of Additional Protocol I
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