Justices of the peace have jurisdiction over the trials of some civil suits and of criminal cases involving minor offenses.

A. superiority


B. authority
C. guidance


D. obedience

两种元素原子的核外电子层数之比与它们的最外层电子数之比相等，在周期表的前10号元素中，满足上述关系的元素共有[ ]

A．1对

B．2对

C．3对

D．4对