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.正确答案C
