运行人员应（）至少对蓄电池进行一次全面检查、维护，并做好蓄电池测量记录。
参考答案：每月
In relation to partnership law, discuss the essentials that will distinguish the partnership agreement from other agreements. (10 marks)
新中国成立后，港口文化伴随着港口发展历经了几个阶段？（）
A.1
B.2
C.3
D.4
