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单选题
217.The engine tachometer system supplies the engine low pressure rotor [N1]and the engine high pressure rotor [N2]speed signals ( )
A
The engine exhaust gas temperature system supplies the engine low pressure rotor [N1]and the engine high pressure rotor [N2]speed signals;
B
The engine rotating speed instrument system supplies the engine low pressure rotor [N1]and the engine high pressure rotor [N2]speed signals;
C
The engine rotor pressure system supplies the engine low pressure rotor [N1]and the engine high pressure rotor [N2]speed signals;
答案解析
正确答案：B
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