The operational test for the HFS-900D transceivers is a BITE test which does a check of the internal functions of the HF transceiver.

A. Ground service bus has no power, but the external power can be supplied.

B. Ground service bus is not energized with external power.

C. Ground service bus is power off when external power is supplied.

A. Estimate the quality of fuel used for the flight.

B. Compute the quantity of fuel required for the flight.

C. Evaluate the quantity of fuel in the flight.

A. This commonality requires greater learning and understanding for pilots, aircraft maintenance technicians and engineers alike.

B. This commonality makes it easier for pilots, aircraft maintenance technicians and engineers alike to learn and understand.

C. This commonality brings about better learning and understanding of the pilots, aircraft maintenance technicians and engineers alike.

A. It＇s not easy to install more than two washers for each bolt.

B. It is forbidden to install more than two washers for each bolt.

C. Installing one washer for each bolt is forbidden.

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. The aircrft is taxiing to China on the runway.

B. The aircrft is running to China on the ramp.

C. A Chinese aircrft is taxiing on the runway.

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. 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. Make sure that the hydraulic oil can be cleaned.

B. Make sure that there is no dust in the hydraulic fluid.

C. Make sure that the hydraulic fluid is uncontaminated.

A. These buses consume power directly from the battery.

B. These buses accept the direct current of battery.

C. The battery supplies power directly to these buses.