1451.ASD would like to thank all the organizations,companies,and individuals who have contributed to this specification.

A. 进气风扇和排气风扇用 V 形带扳手安装。箭头显示正确的安装方向。进气风扇和排气风扇不可装反。

B. 进气风扇和排气风扇用 V 形带卡箍安装。箭头指示正确的流向。进气风扇和排气风扇可互换。

C. 进气风扇和排气风扇用 V 形带卡尺安装。按照箭头显示的方向安装。进气风扇和排气风扇是可更换的。

D. B.进气风扇和排气风扇用 V 形带卡箍安装。箭头指示正确的流向。进气风扇和排气风扇可互换。

E. C.进气风扇和排气风扇用 V 形带卡尺安装。按照箭头显示的方向安装。进气风扇和排气风扇是可更换的。

A. 维修这个组件需要校准过的工具。

B. 安装这个组件需要专用工具。

C. 组件的安装需要精确的工具。

A. The long hand of the clock only goes with the counting function of the clock.

B. The sweep second hand only works with the timing function of the clock.

C. The second pointer is only used for the chronic function of the clock.

A. 在测试结束时要监控速度指示。

B. 在测试后期要监控速度的持续性。

C. 持续监控速度指示至测试结束。

A. When installing the antenna,the arrows must be alignedand point forward.

B. When installing the radome,you must keep the arrow pointing forward.

C. When you install the antenna,the alignment arrow must point forward.

A. 这些作动器控制副翼和升降舵使他们产生运动,以便控制飞机的飞行路径。

B. 这些作动器控制副翼和升降舵的运动,副翼和升降舵控制飞机的飞行路径。

C. 飞机的飞行路径是通过作动器让副翼和升降舵产生运动来控制的。

A. 如燃油面涨到通气油箱高度,则燃油将从通风口中排出。

B. 如燃油水平在通气油箱有充足高度,则燃油将从通风扇中排出。

C. 如燃油油位在通气油箱中足够高,则燃油将从通风戽中排出。

A. The swivel nuts on both valves engage threads on an internal stem that loosens or draws tight the valve stem to a metal seat.

B. The rotating nuts on both valves are meshed with the threads on the inner valve stud,so that the valve stud is loosened or tightened to a metal valve base.

C. The swing nuts on both valves engage with the threads on the internal spool,allowing the spool to loosen or tighten to the metal seat.

A. Cut the shim to the correct size.

B. Trim the washer to the correct size.

C. Cut the patch to the correct dimension.

A. This is the portion of the systems used to generate,regulate,control,and indicate AC electrical power.

B. Here is that portion of the systems used to generate,regulate,control,and indicate AC electronic power.

C. That is the portion of the systems used to generate,increase,control,and indicate AC electrical power.