Dissimilar metal corrosion refers to the corrosion that occurs when two or more different metals are in contact with each other in the presence of an electrolyte . In this situation, an electrochemical reaction is set up between the metals, which causes one of the metals to corrode more quickly than it would have done on its own.

A. If no tabs are used, an identification method should be supplied to facilitate the location of each system or section.

B. If tab dividers are not used, a method of identification shall be provided to permit easy location of each System or Chapter.

C. An identification way should be offered to locate the system and chapter easily if the dividers are improper.

A. 不要在热的表面上使用这些清洁剂。

B. 不要在热的表面上使用密封剂。

C. 不要在热的漆面上使用除味剂。

A. In accordance with the laws, the ACOs have authorized and designated certain inspection and certification responsibilities to Designated Engineering Representatives(DERs), who are qualified individuals formally tested but not employees of the FAA.

B. The ACOs have been authorized by statute to delegate certain inspection and certification responsibilities to Designated Engineering Representatives(DERs), who are properly qualified private persons not employed by the FAA.

C. The ACOs have dedicated certain inspection and certification responsibilities to Designated Engineering Representatives(DERs) as per the Act, the DERs are not employees of the FAA, but some qualified personnel agreed by FAA.

A. Bleed the hydraulic system.

B. Pressurize the hydraulic system.

C. Depressurize the hydraulic system.

A. English is not often the mother language of the readers of technical files.

B. English is not often the private language of the readers of technical books.

C. English is not often the required language of the readers of technical pamphlet.

A. 提供液压动力的说明在显示液压动力警告的屏幕底部，你必须向下滚动屏幕才能看到说明。

B. 液压动力供给说明在屏幕底部显示液压动力警告，你必须向下滚动屏幕才能看到说明。

C. 你必须向下滚动屏幕才能看到液压动力供给指令，因为指令在显示警告的屏幕底部。

A. 记录对蒙皮表面进行的所有修理。

B. 记录对蒙皮封严进行的所有修理。

C. 记录对蒙皮损伤进行的所有处理。

A. Prior to and aft use the tool / equipment, the user shall make a visual check or operational test to confirm the utility.

B. Before or after using the tool / equipment, the user shall make a visual check or functional test to confirm the serviceability.

C. Before or aft of using the tool / equipment, the user shall make a spot check or functional test to inform the usability.

A. Be careful when you put your hand onto printed circuit boards.

B. Be careful when you get close to printed circuit boards.

C. Be careful when you remove printed circuit boards.

A. 打磨两条线之间的孔洞区域。

B. 在两条线的交点上钻一个孔。

C. 通过孔洞排空两条管路。