A、 The counted time resets to 0 when the button is kept down for two seconds.
B、 The total time resets to 0 when the button is held on for two seconds.
C、 The remained time resets to 0 when the button is seen down for two seconds.
答案：A
A、 The counted time resets to 0 when the button is kept down for two seconds.
B、 The total time resets to 0 when the button is held on for two seconds.
C、 The remained time resets to 0 when the button is seen down for two seconds.
答案：A
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. Use the tube if it＇s worked into 3.3 feet long.
B. Use a tube whose length is 3.3 feet.
C. The tube which is used is 3.3 feet length.
A. The exit doors are mainly used for passenger boarding.
B. The exit doors are only used for evacuation.
C. The exit doors are not only used for the passengers to evacuate from the airplane but also used for normal exit.
A. The Check List may be designed by "Challenge" and "Response" headings or by "Item" and "Condition" headings for two pilot airplanes or for single pilot Airplanes.
B. The Check List for the pilot may be set by "Challenge" and "Response" headings for two airplanes or by "Item" and "Condition" headings for single Airplane.
C. For two pilot airplanes, "Challenge" and "Response" headings may be used on the Check List. For single pilot Airplanes, "Item" and "Condition" headings may be used.
A. This is the maximum portion of flammable vapors in air. If the portion is bigger, when an ignition source touched the gas, it would cause the fire to be diffused.
B. This is the minimum volume of flammable vapors. If the volume is lower, when the gas contacted with an ignition source, the fire would not come out.
C. This is the minimum density of flammable vapors in air. If the density was lower, when an ignition source touched the gas, it would not cause the spread of flame.
A. There is always room for improvement in the effort to describe these steps.
B. It is impossible to list all the steps because there is always room for improvement.
C. Describing these steps need to do a lot of work.
A. The manufacturer shall prepare all text in either one or two columns with justification at his own discretion , but, two columns are preferable for readability.
B. Manufacturers shall prepare all text both in one and two columns separately; however, two columns are better for reading.
C. According to the manufacturer＇ explanations, all text shall be prepared in one or two columns; however, two columns have better visual effect.
A. There is a hard landing on the broken nose landing gear.
B. The landing gear has affected hard landing.
C. The nose landing gear is broken because of hard landing.
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 operational test of HFS-900D transceivers is an internal functions check of the HF transceiver and it is a BITE test.
B. The BITE test for the HFS-900D transceivers is the operation test that does the inner check of the HF transceiver.
C. The check of the internal functions of the HF transceiver is a BITE test related to HFS-900D transceivers.
