2997. Aircraft equipped with tail wheels are generally towed forward by attaching the tow bar to the main landing gear ( )

　Normally for an aircraft that has tail wheels, you can tow the tail wheels forward. Todor this you can connect the tow bar to the main landing gear.

　Usually, for an aircraft that has tail wheels, you can link the tow bar to the main landing gear, thus you can tow the aircraft forward.

　For an aircraft that has tail wheels: you can tow the aircraft forward only when the tow bar is linked to the main landing gear.

正确答案：B

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