1423.Make sure that the bogie rollers are aligned with the notches in the track.

A. Remove the damaged parts.

B. Replace the damaged parts.

C. Repair the damaged parts.

A. The correction installation of the upper drag strut can prevent the retraction of the lower drag strut.

B. If the upper drag strut is installed improperly,the lower one will be hit during retraction.

C. The removal of the upper drag strut has to be done properly so that the lower one can fully extend.

A. 支撑柱将地板结构固定在适当位置。

B. 支撑柱将地板结构固定在地面上。

C. 支撑柱适用于稳定的地板结构。

A. Do the weighing procedure in this sequence.

B. In this order to perform the swapping procedure.

C. In this sequence to do the analysis procedure.

A. Do not lift the aircraft on jacks if the wind speed is more than 20 MPH.

B. Do not hoist the aircraft on chocks if the wind speed is more than 20 MPH.

C. Do not raise the aircraft on jacks if the win

D. speed

A. When the temperature of vent rises to 27℃,the exhaust pipe opens.

B. When the ventilation temperature is above 27℃,the drain mast opens.

C. When the temperature of the ventilation air increases to 27 °c,the discharge valve opens.

A. 显示器必须与表中的数值一致。

B. 根据显示要求必须与台架上的活门保持相同。

C. 显示结果必须与表中的数值一致。

A. Detach the sensor to establish a physical connection with the adjoining structure.

B. Install the sensor to block access to the adjacent structure.

C. Take out the sensor to reach to the neighboring structure.

A. 动力装置或通过排气或通过螺旋桨产生推力。

B. 动力装置通过废气或螺旋桨发展推力。

C. 动力装置通过尾气或螺旋桨产生推力。

A. Put down a face mask and protective clothing.

B. Put on a face goggle and protective clothing.

C. Put on a face mask and protective clothing.