A、 If the instrument fails to respond, do a test.
B、 If the instrument does not operate correctly, do a test
C、 If the instrument does work correctly ,do a test.
答案：B
A、 If the instrument fails to respond, do a test.
B、 If the instrument does not operate correctly, do a test
C、 If the instrument does work correctly ,do a test.
答案：B
A. Catalyst remains unchanged during the processing of chemical action.
B. Catalyst is substance used to change the speed or rate of a chemical action with its molecular structure being changed.
C. Catalyst is substance used to change the speed or rate of a chemical action without being physically changed itself.
A. A component of a system used to treat waste water. Including washbasin, water cabinet, toilet system, etc.
B. That portion of the system which is used for disposal oil water and waste. Includes items such as wash basins, water closets, flushing systems, etc.
C. The part of a system used to treat waste water. Including washbasin, water pipe, flushing system and so on.
A. Tire wear increases with high speed.
B. The higher the speed is, the more fragile the tire becomes.
C. The tire blows out as the speed increases.
A. That portion of the system used to record crew member communication.
B. That portion of the system used to record crew member command.
C. That portion of the system used to record crew member conversation.
A. The flight crew can get visual and aural indication about a fire in any of these fire alarm systems.
B. The fire alarms provide indications about afire in any of these systems to the flight crew in visual and aural ways.
C. Visual and aural indications are the fire alarms that the flight crew will get from any of these systems.
A. System test is normally used at minor maintenance time.
B. System test is usually done during maintenance and repairs.
C. System test is normally used at major maintenance periods.
A. Troubleshooting information describing probable malfunctions, how to delete those malfunctions, and the removal action for those malfunctions shall be provided.
B. Troubleshooting information describing the real malfunctions, how to recognize those malfunctions, and the remained action for those malfunctions shall be provided.
C. Troubleshooting information describing probable malfunctions, how to recognize those malfunctions, and the remedial action for those malfunctions shall be provided.
A. The power source that are discussed respectively under the appropriate chapter heading shall provide power to at least two systems.
B. When two or more systems are served by a single power source, that power source will be discussed separately under the appropriate chapter heading.
C. The system that is powered by two or more power sources shall be discussed separately under the appropriate chapter heading.
A. 使用力矩扳手间隔拧紧螺栓。
B. 使用扭力扳手按顺序拧紧螺栓。
C. 使用扭矩扳手逐步拧紧螺栓。
A. Proper warnings and cautions shall be provided stead of the text while notes may precede or follow suitable text up to the material to be highlighted. warning, cautions and notes shall not show procedural steps nor shall they be numbered.
B. Unlike warnings and cautions which must lines in the rear of text, notes may precede or follow porper text up to the material to be highlighted, warning, cautions and notes shall not provide procedural steps nor shall they be numbered.
C. Like warnings and cautions which must lines in the rear of text, notes may precede or follow porper text up to the material to be highlighted, warning, cautions and notes shall not provide procedural steps nor shall they be numbered.
