A、 The lower seal appears as the lower bearing is pulled down.
B、 You can see the lower seal before pulling the lower bearing down.
C、 Only after you pull the lower seal down can you see the lower bearing.
答案：A
A、 The lower seal appears as the lower bearing is pulled down.
B、 You can see the lower seal before pulling the lower bearing down.
C、 Only after you pull the lower seal down can you see the lower bearing.
答案：A
A. The location where a red mark is on the pin needs to be lubricated.
B. You should identify the red mark on the lubricant point.
C. The lubrication point shows that you can find marks on the pin.
A. To open the containers for these materials, suitable tools must be used.
B. The appropriate tools should be selected to open the materials, the containers is inside the materials.
C. The inappropriate tools should be selected to open the containers, the containers is made in the materials.
A. If this specification is written in professional terms, the problems won＇t arise.
B. This specification agrees with recognized industry practices, and the problems can＇t be avoided according to this specification.
C. If this specification is written in professional terms, the problems will be treated adequately.
A. Licensed personnel appropriately finish the requirements of all other maintenance on airplane.
B. All other maintenance required on airplane should be done by the personnel who have the corresponding license.
C. All other maintenance requires that the properly licensed personnel should be on airplane.
A. Find out which door has a fault and is closed.
B. Make sure that which door has a failure.
C. Find out which door has not closed.
A. If the right engine stops, what position will APU servo valve stop at?
B. If the right engine is not running,what position will APU bleed valve stop at?
C. If the right engine stops, will APU servo valve stop at close position?
A. Use the correct tools to open the containers for these materials.If you do not follow these prerequisites, injury to your skin and lungs can occur.
B. Get the corrective tools to open the containers for these materials.If you do not obey these precautions, injury to your skin and lungs can occur.
C. Get the proper tools to open the containers for these materials.If you do not observe these precautions, injury to your skin and lungs can occur.
A. Inspect the drain holes for obstruction.
B. Check for the drain holes for abrasion.
C. Check the drain holes for leakage.
A. Such tests or checks will be completed according to the conditions.
B. Such tests or checks will be very complex according to the conditions.
C. Such tests or checks will be different in complexity according to the conditions.
A. You can find electronic devices in nearly all aircraft systems. They are system control and monitoring computer, the control inputs and indications in the cockpit and sensors throughout the whole aircraft.
B. The computer used for system control and monitoring and the control inputs and indications in the cockpit and sensors all over the whole aircraft are the electronic devices used in almost all aircraft systems.
C. Electronic devices can be found in nearly all aircraft systems that are computer for system control and monitoring in the cockpit and sensors all over the whole aircraft.
