A、 If a supply shutoff valve was closed within five minutes of maintenance performance is needed and shutoff periods are not accumulated.
B、 Maintenance action is not necessary and shutoff periods are not calculated unless the shutoff valve was closed for less than five minutes.
C、 When a supply shutoff valve was closed for five minutes, maintenance action is hardly required, and shutoff duration are not included.
答案：A
A、 If a supply shutoff valve was closed within five minutes of maintenance performance is needed and shutoff periods are not accumulated.
B、 Maintenance action is not necessary and shutoff periods are not calculated unless the shutoff valve was closed for less than five minutes.
C、 When a supply shutoff valve was closed for five minutes, maintenance action is hardly required, and shutoff duration are not included.
答案：A
A. Make sure the text is not so abstruse and that it clearly shows how to do a task orhow a system operates. Be practical. Do not give vague, general information.
B. Make sure the text is not so theoretical and that it clearly shows how to do a task orhow a system operates. Be concrete. Do not give unclear, general information.
C. Make sure the text is not so abstract and that it clearly shows how to do a task orhow a system operates. Be practical. Do not give vague, general information.
A. Filling with oxygen is not permitted during defueling and refueling.
B. Servicing with oxygen is not allowed during refueling and defueling.
C. Servicing with oxygen is not prohibited during fueling and defueling.
A. It is common practice to tighten the bolts in this sequence.
B. It is standard procedure to tighten the bolts in this sequence.
C. It is standard procedure to tighten the bolts in this method.
A. 燃油温度传感器的电阻随燃油温度的变化而变化。
B. 燃油测温包的阻抗改变燃油的温度。
C. 电感改变燃油测温灯泡的燃油温度。
A. Notes emphasize conditions such as operating procedures, inspection, repair or maintenance, etc., which may be met a appropriate.
B. Notes emphasize the conditions of operation procedure, inspection, repair or maintenance, etc., must be followed.
C. Conditions for operating procedures, inspection, repair or maintenance, etc., must be emphasized in the notes.
A. The purpose of the CSD is to contain the variable speed of the engine to a flexible speed for the driven of the rectifier to produce AC power at flexible frequency.
B. The function of the CSD is to transform the variable speed of the engine to a constant speed, in order to actuate the generator to generate AC power at constant frequency.
C. The purpose of the CSD is to convert the various speed of the engine to a single speed for the driven of the generator to reduce AC power to a constant frequency.
A. After the valid date of this amendment, a newly produced aircraft＇s pilot＇s manual must be approved by FAA.
B. After this revision date, FAA must approve a newly produced aircraft＇s pilot＇s manual.
C. After the effective date of this revision, Pilot＇s Operating Handbooks for newly manufactured airplanes must be FAA Approved Airplane Flight Manuals.
A. That portion of the system and its controls which supply environment air to the cabin. Includes items such as controls and indicating systems related to the compressors, etc., if applicable. Does not include the stress control and indicating system for the cabin pressurization.
B. That portion of the system and its controls which supply compressed air to the cabin. Includes items such as controls and indicating systems related to the compressors, etc., if applicable. Does not include the pressure control and indicating system for the cabin pressurization.
C. That portion of the system and its controls which supply compressed air to the cockpit. Includes items such as controls and indicating systems related to the compressors, etc., if applicable. Does not include the pressure control and indicate system for t he cabin pressurization.
A. The turbine rotates by a reduction gear gives tolerance to the HP shaft, so it can drive the engine and the aircraft accessories.
B. The turbine turning through a reduction gear, applies a torque to the HP shaft, thus driving the engine and the aircraft components.
C. The turbine turning through a reduction gear, applies a torque to the HP shaft. thus driving the engine and the aircraft accessories.
A. 从冷冻室里取出来之后,铆钉必须在15分钟以内完成装配
B. 从冷冻室里取出来之后,铆钉必须放置15分钟以后才能装配
C. 从冷冻室里取出来15分钟之内不可以装配
