有关液压控制功能软件（HYDIF）说法错误的是

This cover will keep dirt, particles, or other unwanted material out of the system.

This is the minimum flight speed at which the airplane is directionally and laterally controllable.

This is the minimum flight speed at which the airplane is directionally and laterally controllable, determined in accordance with the Federal Aviation Regulations.

This material gives more protection.

Special inspection intervals for airplane systems and, possibly, for life limited parts, may be covered in this paragraph or there may be a reference to another section or another document where such inspection intervals may be found.

This section shall cross-reference the detailed procedures included in the individual Maintenance Practices.

Exterior Color Schemes and Markings: This subsystem/section breakdown reserved for airline use.

This procedure obeys all the requirements of service bulletin no. 97.

This method is recommended as minimizing errors of distribution, and also informs owner of the availability of systems and equipment.

这部分包括发动机架、减震器、支撑杆、安装螺栓等。