946、Maximum landing gear operating speed is the maximum speed at which the landing gear can be safelyextended or retracted 最大起落架工作速度是起落架可以安全伸展或收放的最大速度

542、If it is possible that the temperature values will be more than the permitted limits, decrease the power.

541、If either of these devices is installed explain whether it is required equipment.

540、If an engine fire detection system is available. describe, give principle of operation, and explain how to use it.

539、If a supply shutoff valve was closed for less than five minutes no maintenance is required and shutoff periods are notaccumulative.

538、If a company publication style manual is used, the format and layout should follow this Specification to the extentpracticable

537、Identify the wires with sleeves of different colors.

536、Identify sections that can cause specific types of trouble

535、However, the systems are independent and there is no fluid, exchange between them.

534、Hold the cylinder tightly.

533、Head aircraft into the wind.