A、 A lab analysis of the contamination is required to the frequently clogged filters.
B、 When you find the filters blocked in a very short time, ask the vendor to inspect them for any contamination.
C、 If the filters get clogged at an unusually early stage, send them to the laboratory to analyze the contamination.
答案：C
A、 A lab analysis of the contamination is required to the frequently clogged filters.
B、 When you find the filters blocked in a very short time, ask the vendor to inspect them for any contamination.
C、 If the filters get clogged at an unusually early stage, send them to the laboratory to analyze the contamination.
答案：C
A. Restrictions on use of cabin pressurization during Takeoff, landing, or in flight shall be noted
B. That portion of the system is used to de-ice all airfoil surfaces once ice is formed.
C. All airfoil surfaces are equipped with that portion of the system to stop ice formation.
A. Advisory circular must always be carried out on aircraft.
B. Advisory circular is the procedure that must be used when performing maintenance on an aircraft.
C. FAA provides advisory circular which is not always carried out on aircraft.
A. The Boeing 747 symbolizes the beginning of a new ear in air transport.
B. The Boeing 747 is the first type of airplane in air transport.
C. Modern air transport started from the Boeing 747.
A. Provide the pneumatic power for the system.
B. Supply the electrical power for the system.
C. Remove the electrical power of the system.
解析：这道题是关于系统去能化的问题。De-energize意味着去能化，也就是移除系统的电力。所以正确答案是C。
让我们通过一个生动有趣的例子来帮助你更好地理解这个概念。想象一下你的手机是一个系统，它需要电力才能正常工作。当你想要关闭手机时，你会按下电源按钮，这样手机就会De-energize，也就是移除电力，手机就会关闭。在这个例子中，De-energize就相当于移除手机的电力，让手机关闭。
A. Independent, self-contained, gas reservoir assembly offers 7-9 seconds of pressure for operating after actuation.
B. Divided, self-contained, gas reservoir assembly stores the operating energy within 7-9 seconds prior actuation.
C. Single, self-contained, gas reservoir assembly provides the operating pressure within 7-9 seconds after actuation.
A. If abbreviations have special meanings, they may be used.
B. Abbreviations should not be used if they are universally meaningful.
C. Only use abbreviations whose meanings are generally recognized.
A. There is no influence on your eyes for hydraulic fluid.
B. Hydraulic fluid has no effect on your eyes.
C. Hydraulic fluid can cause eye injury.
A. It is permitted to show the legends within the diagram instead of listing at the bottom or on an adjacent page by the abbreviation number.
B. Legends shall be explained in a simple way within the diagram at the bottom or on an adjacent page except for abbreviation with numbers in a list.
C. If the space is enough, the legends shall be stated within the diagram and do not list them by numerical abbreviations at the bottom or on an adjacent page.
A. Check such system to determine the cause of interference.
B. Examine part of the system to find the cause of the interference.
C. Examine all of the system to find the cause of the interference.
A. Use of cabin pressurization during Takeoff, landing, or in flight shall be carefully restricted.
B. Use of cabin pressurization during Takeoff, landing, or in flight has limitations that shall be observed.
C. You shall follow the strict requirements when using cabin pressurization during Takeoff, landing, or in flight.
