每个系统包括基本部件和所有仪表、机械控制器，以及与系统有关的电气和液压组件：

A Each system is composed of basic components and all equipment, mechanic controls and system related electric and hydraulic units

B Basic components and all apparatus are made up of each system, including mechanical controls and electrical and hydraulic units related system.

C Each system includes the basic components and all instruments, mechanical controls, electrical and hydraulic units related to the system.