253.不要吸入溶剂烟雾。

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. 　 维护手册的简介部分应包含供应商出版物的清单,或提及此类清单的位置,
无论这些清单是包含在系统说明中还是在单独的文档中提供的。

B. 　 维护手册的简介部分应包含供应商出版物的清单,并提及此类清单的位置,
无论这些清单是包含在系统说明中还是在单独的文档中提供的。

C. 　 维护手册的简介部分既不包含供应商出版物的清单,也未提及此类清单的位
置,无论这些清单是包含在系统说明中还是在单独的文档中提供的。

A. 　文中此类插入语应简短明了并用于强调重要和关键的指示。

B. 　文中此类插图应简单具体并用于强调重要和关键的指示。

C. 　文中此类插入语必须简短明了并用于强调重要和批评性的指示。

A. 　ACCEPTABLE

B. 　ACCEPTANCE

C. 　ACCEPT

A. 　All flow control devices within the system, such as check valves, fuel
pumps, accumulators, and relays should be included.

B. 　All flue control devices within the system, such as single valves, fuel
pumps, storage, and relays should be included.

C. 　All flow control devices within the system, such as single valves, fuel
pumps, accumulators, and relays should be included.

A. 　APPROVAL

B. 　AUTOMATIC

C. 　AUTHORITY

A. 　向前旋转手柄

B. 　向后移动水平面

C. 　向后移动手柄

A. 　Calibrate the hygrometer to the celsius scale.

B. 　Calibrate the thermometer to the celsius scale.

C. 　Calibrate the clinometer to the celsius scale.

A. 　确保间隙在限制范围内。

B. 　确保空间有限。

C. 　确保空间是受限的。

A. 　为了 CAP 在持续(连贯)的基础上取得成功,运营商、FAA 和 ABC 飞机公司
之间的信息自由流动至关重要。

B. 　为了在 CAP 基础上持续(连贯)取得成功,运营商、FAA 和 ABC 飞机公司之
间的信息自由流动至关重要。

C. 　为了使 CAP 取得 l 连续成功,运营商、FAA 和 ABC 飞机公司之间的信息自由
流动至关重要。