590.True Airspeed is the airspeed of an airplane relative to undisturbed
air which is the CAS corrected for and compressibility.

A. 　Those units means that they can prevent it from eroding.

B. 　Those units provide a method of deicing.

C. 　Those units provide away to prevent the formation of ice.

A. 　The sequence of the explanation should be powerplant instrument
markings, then powerplant Limitations.

B. 　An explanation of powerplant instrument markings shall immediately
follow the presentation on powerplant Limitations.

C. 　Presentation on powerplant Limitations shall come after the explanation
of powerplant instrument markings

A. 　When making this specification,the rules are generally refer to the
rules that used by FAA in making its rules .

B. 　When making this specification,we use the exact identical construction
rules with FAA in making its specifications.

A. 　 维修手册中准备某些章节的技术数据需要机身制造商和各种其它部件制造商
之间的共同贡献和密切协作。

B. 　 编写维修手册某些章节的技术资料时,需要机身制造商和各种其他部件制造
商之间的共同协作。

C. 　 机身制造商和各种其他部件制造商可以共同协作以完成维修手册,一些章节
的技术参数的编写工作。

A. 　The equipment lit shall contain all equired or optional equipment.

B. 　All required equipment and facilities should be included in this list.

C. 　Only optional equipment is described in this equipment list.

A. 　示意图应倾向于处理整个系统,而不是子系统,如空调系统,而不是空调系
统内的压气机或供气扇。

B. 　示意图应倾向于处理整个系统,而不是子系统,如空调系统,而不是空调系
统内的涡轮或排气扇。

C. 　示意图应倾向于处理整个系统,而不是子系统,如空调系统,而不是空调系
统内的涡轮或供气扇。

A. 　This material releases dangerous fumes when it touches hot surfaces.

B. 　On contact with hot surfaces, this material produces dangerous fumes.

C. 　This material happens dangerous gases when it comes into contact with
hot surfaces.

A. 　安装或重新激活程序与拆除或失效程序相反的说法是不被接受的。

B. 　安装或重新拆除程序与拆除或失效程序相反的说法是不具说服力的。

C. 　安装或重新激活程序与拆除或失效程序相反的说法是被禁止的。

A. 　Deflate the system before you disconnect the components.

B. 　Bleed the system before you disconnect the components.

C. 　Bleed the system before you interrupt the components.

A. 　if the engine appears to be heating, turn it off.

B. 　if the engine appears to be overheating, turn it off.

C. 　if you think the engine is too hot, turn the switch to “off”.