A、 In the event of loss of normal power, the backup power system offers AC and DC power for at least 60 minutes to the systems to maintain the flight safe.
B、 In order to hold the flight safety, the standby power system supplies a minimum of 60 minutes of AC and DC power to systems when the normal power is not available.
C、 If there is no normal power, the standby power system provides AC and DC power to systems necessary to keep safe flight for at least 60 minutes.
答案：C
A、 In the event of loss of normal power, the backup power system offers AC and DC power for at least 60 minutes to the systems to maintain the flight safe.
B、 In order to hold the flight safety, the standby power system supplies a minimum of 60 minutes of AC and DC power to systems when the normal power is not available.
C、 If there is no normal power, the standby power system provides AC and DC power to systems necessary to keep safe flight for at least 60 minutes.
答案：C
A. Unscheduled maintenance are those maintenance checks and inspections on the aircraft,its systems and units which are recognized by the manufacturer as special or unusual conditions which are not related to the time limits specified in-10 above.
B. For the unscheduled maintenance checks and inspections of aircraft,aircraft systems and components,the manufacturer shall not include special or unusual conditions from the time limits specified in-10.
C. If the unscheduled maintenance checks and inspections on the aircraft,its systems and units are special or unusual conditions,the time limits specified in-10 shall be referred to by the manufacturers.
A. Even though this specification is conformed to recognized industry practices, it is prepared in broad genuine terms and it is recognized that problems will occur which are not handled enough by the specification.
B. Although this specification coheres with recognized industry practices, it is written in vast general terms and it is asserted that problems will appear which are not treated sufficiently by the specification.
C. Though this specification complies with accepted industry practice, it is compiled in wide generic terms and it is recognized that problems which are not treated adequately by the specification will arise.
A. Do not use verbs that are general and vague.
B. Do not use verbs that are normal and mixed.
C. Do not use verbs that are usual and blended.
A. 本说明为根据适用的联邦航空法规认证的所有类型的通用航空飞机的使用手册编写提供了专业的通用指导。
B. 本规范为根据适用的联邦航空法规认证的所有类型的通用航空飞机的使用手册编写提供了广泛的通用指导。
C. 本规范为根据适用的联邦航空法规认证的所有类型的运输类航空飞机的使用手册编写提供了广泛的通用指导。
A. All the related data shall be grouped in a logical manner.
B. A logical method is required to group the unconcerned data together.
C. Divide all the involved data into groups logically.
A. 修复所有凹坑的表面。
B. 修复有腐蚀的表面。
C. 修复有划痕的表面。
A. 显示器顶部和左侧角落的数字指向相关页面。
B. 显示器左上角的数字代表手册对应页码。
C. 显示器左上角的数字代表相关页面。
A. This work is not applicable to horizontal installations.
B. This work is not practical to vertical installations.
C. This work is not applicable to vertical installations.
A. The temperature increase results in the tension decreasing in the cables.
B. The temperature increase affect slightly the tension in the cables.
C. The tension in the cables is a crucial factor in the temperature changes.
A. The material required above shall be presented as follows.
B. The material required above shall be presented as order.
C. The material are required above will be presented as follows.
