2842.Those units and components are used to generate,control,distribute electrical current to ignite the fuel air mixture in the cylinders of reciprocating engines or in the combustion chambers or thrust augmentors of turbine engines.

A. A mixture of fuel and oxygen can cause an explosion.

B. Fuel and oxygen react with each other to cause explosion.

C. A mixture of fluid and oxygen can be set on fire.

A. If you get an unwanted movement,do a test of the system.

B. If the move is not set up by you,verify the system.

C. If the removal is not what you want,test the system again.

A. Operation time should be recorded if the pump is in emergency .

B. When you use the emergency pump,record the time of operation.

C. When the pump is for emergency use,record the time of usage.

A. 用标记识别曲柄和轴,以防止安装错误。

B. 用标记识别曲柄和轴,以阻止安装错误。

C. 用标记识别手柄和轴承,以防止安装错误。

A. Horsepower Radius and Engine Revolving Speed

B. Horsepower Ratings and Propeller Rotational Speed

C. Horsepower Values and Propeller Turning Speed

A. Apply two kindreds of protective compound to shield the sealant from any harm caused by hydraulic fluid.

B. In order to prevent damage to the sealant from hydraulic fluid,it is necessary to apply two layers of protective compound.

C. To prevent hydraulic fluid from drowning the sealant,it is recommended to apply two layers of protective compound.

A. Failure of the air turbine starter can trigger the engine overheat and fire indications.

B. The air turbine starter fails to trigger the engine overheat and fire indications.

C. Failure of the air turbine starter can cause the engine overheat and fire indications.

A. 将备件送到修理厂。

B. 将零件送至大修商店。

C. 将部件送到大修车间。

A. 为了保持手册处于最新状态,应该让飞机运营人把将采纳的相关程序或措施的信息在手册中载明。

B. 手册应包含要求飞机的运营人要采用的相关程序或措施的信息,以保持手册处于现行状态。

C. 飞机的运营人需要保持手册处于最新状态,因此手册内容应包含关于程序或采取的措施的相关信息。

D. C.飞机的运营人需要保持手册处于最新状态,因此手册内容应包含关于程序或采取的措施的相关信息。

A. Accumulate the thickness of the shim as follows: t=x-y.

B. Calculate the thickness of the shim as follows: t=x-y.

C. Calculate the width of the shim as follows: t=x-y.