A、 Clean the surface with a soap and clean a water solution.
B、 Use a soap-and-water solution to clean the surface.
C、 Use a soap to clean the surface and a water solution.
答案：B
A、 Clean the surface with a soap and clean a water solution.
B、 Use a soap-and-water solution to clean the surface.
C、 Use a soap to clean the surface and a water solution.
答案：B
A. The main gear leg could be held by the side stay.
B. The main gear leg could be hampered by the side stay.
C. The main gear leg could be contained by the side stay.
A. Do not perform any work to the aircraft during maintenance.
B. It is forbidden to refuel the aircraft during maintenance.
C. You can add fuel to the aircraft at any time.
A. Ensure that the label adheres tightly to the surface and that no bubbles are present.
B. Verify the full attachment of the label to the surface and accept the presence of bubbles.
C. Make sure the label is partially attached to the surface, ensuring there are no bubbles present.
A. If the pump is not suitable to be used, replace it.
B. If the pump is outmoded, replace it.
C. If the pump malfunctions, change the location for it.
解析：这道题考察的是逻辑推理能力。句子的意思是如果水泵无法维修，就应该更换它。选项A符合题意，因为unsuitable意思是不适合使用，与unserviceable意思相近，所以是正确答案。
举个生动的例子来帮助理解：假设你的手机屏幕坏了，修理店告诉你无法维修，只能更换新的屏幕。这种情况下，你会选择更换新的屏幕，因为旧的屏幕已经无法继续使用了，就像题目中提到的水泵无法维修一样。所以正确的做法是选择更换新的屏幕，就像选择选项A中的意思一样。
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. When you restore the airplane to its normal condition, make sure the pin is released from the release mechanism.
B. Ensure to remove the pin from the let-go mechanism after you return from the airplane to its common position.
C. When the airplane is in good condition, you must uninstall the pin of the release mechanism.
A. When the cumulative revised pages (including back-up pages) exceeds 60% of the total pages of the manual, a reissue should be prepared.
B. If the updated pages, including back-up pages, were less than 60% of the total page of the manual, a new manual should be copied.
C. Up to 60% of total pages (including back-up pages) were accumulated by mistake, the manual should be rewritten.
A. If one or more blades are broken, make an entry in the engine logbook.
B. If one or more blades are in place , make an entry in the engine logbook.
C. If one or more blades are absent, make an entry in the engine logbook.
A. However, an “emergency” almost always entails a failure that requires to respond immediately and rapidly, for example, the situations that a total powerplant fails, the fire or smoke occurs, or the cabin are depressurized rapidly.
B. An “emergency” however, almost always causes a malfunction that requests immediate and rapid response, such as the whole powerplant failure, fire or smoke, or rapid cabin pressurization.
C. However, an “emergency” is often related to a failure that demands respond simultaneously, such as the complete failure of the powerplant, fire or smoke, or rapid cabin warming.
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.
