556.Make sure that the stopwatch indication is between 2 and 4 minutes.

A. 　 当飞机在地面时用来估计燃油量的辅助系统.

B. 　 当飞机在地面时用来计算燃油量的辅助系统.

C. 　 当飞机在地面时用来探测燃油量的辅助系统.

A. 　as you do the valve test, ensure that there is no leak.

B. 　while you do each step of the valve test,ensure that there is no leak.

C. 　while you do each step of the valve test, make sure that there is no
leakage.

A. 　Distances shown are based on weak wind.

B. 　Distances shown are developed with no wind.

C. 　Distances shown are on the basis of gentle wind.

A. 　制造商应将制造商发布的类型服务信息以及为获取此类信息而连续的办公室
或部门的描述包括在内,以便飞机可以按照发布的最新信息进行维修。

B. 　制造商应将其发布的服务信息的等级包括在内,以及能提供此类信息的办公
室或部门,从而按照最终发布的信息维护飞机。

C. 　制造商应将其发布的服务信息的类型包括在内,以及能提供此类信息的办公
室或部门,从而按照最终发布的信息维护飞机。

A. 　封面标题和适用的飞机名称应显著地显示在手册的封面或书脊(或两者)上。

B. 　封面标题和适用的飞机名称应着重地显示在手册的封面或书脊(或两者)上。

C. 　覆盖的标题和使用的飞机设计应突出的显示在手册封面或书脊(或两者)上。

A. 　This work is applicable to horizontal installations.

B. 　This work is applicable to direction installations.

C. 　This work is applicable to vertical installations.

A. 　锁紧件

B. 　安全带

C. 　紧固件

A. 　Space permitting, legends shall be spelled out within the diagram rather
than abbreviated or keyed by numerals to a list of legends at the bottom
or on an adjacent page.

B. 　Where Space permits, legends should be illustrated in forms,rather than
briefed or typed in legend lists at the bottom or on adjust pages.

C. 　Space permitting, legends have to be explicited within the chat rather
than syncopated or keyed by numbers to a list of legends at the bottom
or on an adjacent page.

A. 　An appropriate caution or note shall be contained in each Handbook to
inform the operator that a current Handbook is required to be in the
airplane during flight and that it is the operator's duty to keep the

B. 　A current Handbook that an appropriate warning or note shall be obtained
in each Handbook to inform the operator is required to be in the airplane
during flight and that it is the operator's responsibility to retain the

C. 　A suitable warning or note shall be involved in each Handbook to inform
the operator that a current Handbook is required to be in the airplane
during flight and that it is the operator's responsibility to maintain
the Handbook in a current status .

A. 　 GETS OFF

B. 　 BECOMES OFF

C. 　 GOES OFF