784、设备清单应包含所有必须的或可选的设备 were

539、If a supply shutoff valve was closed for less than five minutes no maintenance is required and shutoff periods are not accumulative.

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

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.

532、Handbooks shall be readily revisable.They may be thin loose-leaf from, with durable, multi-ring cover, or permanently bound.

531、Get medical aid immediately.

530、Get a sample of fuel and do a test for water contamination