失去交换能力的钠离子树脂可以使用还原液再生，目前采用（）溶液进行再生还原。
A.NaCl
B.MgCl2
C.CaCl2
D.NaOH
参考答案：A
胁迫他人实施违反治安管理行为的，应从重处罚。（）
More and more vehicles using cheap fuel, declared scientists at the conference, have left Bangkok’s children with body lead levels the world highest.
A．in the world highest B．in the world’s highestC．among the world’s highest D．among the highest of world
