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【简答题】
IA、IIA的同族元素,从上到下,电负性依次( );金属性依次( )
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皮皮学刷刷变学霸
举一反三
【单选题】According to Article 39 of Exit and Entry Administration Law of the PRC, for foreigners who reside or stay in domiciles other than hotels, they or the persons who accommodate them shall, within ______...
A.
24 hours
B.
72 hours
C.
7 days
D.
15 days
【单选题】We are ________ the command of the provincial public security department.
A.
on
B.
with
C.
under
D.
in
【单选题】符合青霉素类抗生素的结构特征的是( )。
A.
β-内酰胺与噻唑环稠合
B.
β-内酰胺与噻嗪环稠合
C.
β-内酰胺与咪唑环稠合
D.
β-内酰胺与氢化噻唑环稠合
E.
β-内酰胺与氢化噻嗪环稠合
【单选题】The Bureau of Public Security has decided to hold an inquiry to find out the cause of the big fire.
A.
investigation
B.
research
C.
examination
D.
inquest
【单选题】Which article of the Law of the People’s Republic ofChinaon Administrative Penalties for Public Security regulates the behaviors of disturbing the public order?
A.
Article 20
B.
Article 22
C.
Article 24
D.
Article 26
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