496.If there is fuel leakage from the couplings,repair them.

A. 允许的最大差值为 5mm。

B. 最小容差为 5mm。

C. 允许的平均偏差为 5mm.

A. Make sure that the fuel tanks are correctly grounded.

B. The fuel tanks must be grounded.

C. Make sure that the oil tanks are on the ground correctly.

A. 很多滑油的回油滤都内置旁通活门。当滤芯堵住时旁通活门打开,使得滑油从旁路流过。

B. 很多液压油的回油滤都内置旁通活门。当滤芯堵住时旁通活门打开,使得油液从旁路流过。

C. 很多滑油的回油滤都内置旁通活门。当滤芯故障时旁通活门打开,使得滑油从旁路流过。

A. Spoilers are used to increase the drag of the aircraft in flight,or to interrupt lift during landing and during rejected take-off.

B. Spoilers are used to enhance aircraft resistance in flight or to disrupt boost during landing and when take-off is canceled.

C. Spoilers are used to increase the aircraft drag in flight,or destroy the lift during landing and in case of aborted take-off.

A. Reinstall the supply ducts in the wing de-icing system.

B. Install the telescopic ducts in the wing de-icing system.

C. Install the elastic ducts in the wing anti-icing system.

A. The test will stop when the pressure is larger than 7000 kpa.

B. Stop the test if the pressure reaches 7000 pa.

C. Stop the test when the pressure is more than 7000 kpa.

A. 对比两个指示。

B. 叠加两个示数。

C. 记录两条线索。

A. 基本上,它是以对飞行员最有用的形式来呈现已被证明的概念的行业标准化指南。

B. 基本上,它是一个指导行业标准化的证明概念,以一种最有用的形式提供给飞行员。

C. 基本上,它是一个证明行业标准化概念的指南,并提供一种对飞行员最有利的形式。

A. Make an estimate of the necessay quantity.

B. Make a record of the necessary quality.

C. Make a note of the necessary quality.

A. An alphanumeric identifier is an assembly of characters and numbers.It can recognize something.

B. An symbolic-numeric identifier is an assembly of symbols and numbers.It can identifies something.

C. An alphanumeric identifier is a combination of letters and numbers that identifies something.