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单选题
Aircraft equipped with tail wheels are generally towed forward by attaching the tow bar to the main landing gear.
A
Normally, for an aircraft that has tail wheels, you can tow the tail wheels forward. To do this you can connect the tow bar to the main landing gear.
B
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.
C
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.
答案解析
正确答案：B
