Light L4 comes on in 5 seconds or less .

A. The airworthiness and safe operation of an airplane is assured if it＇s used as its original design purpose, properly inspected and carefully maintained.

B. The manufacturer is intended to utilize an airplane with sound inspection and maintenance practices because that is the basis for assuring the airplane remains airworthy and safe to operate.

C. The airplane is designed to be used as the manufacturer＇s intention. Users shall properly inspect the airplane and do sufficient maintenance to assure its airworthiness and operation safety.

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.

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 valve has flaps shaped like a full circle.

B. The shape of the valve flaps is a half ring.

C. The valve flaps have a shape of half circle.

A. The CAP compiler should determine the format and layout, it is desirable that the format and layout should be similar to the compiler＇s current documents.

B. The format and layout should be determined by the CAP producer, it is intended that the format and layout shall be similar to the producer＇s existing files.

C. The format and layout should be determined by the CAP producer, recognized that it is desirable the format and layout should be the same as the producer＇s existing documentaries.

A. With the aid of the component manufacturer, all components in this chapter can be overhauled in any workshops with different qualifications.

B. Without the data supplied by the component manufacturer, it is possible for the most qualified shop to overhaul any components included in this chapter.

C. You must overhaul any or all components in this chapter in an eligible shop on the basis of data provided by the component manufacturer.

A. The selection of data by manual producers which are included in this section shall be restrained by the concepts contained in the preface of this specification.

B. The selection of data by manual producers included in this section shall be governed by the concepts contained in the preamble to this specification.

C. In this selection, the producer＇s choice of data should be bound by concepts contained in the preamble of this specification.

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. 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. Adjust the lever intentionally and reset the system to the neutral position.

B. Move the lever before setting the system to the neutral position again.

C. In case of an inadvertent lever movement, return the system to the neutral position again.