WhatdoestheN1rotorconsistof？（）
A. rbine.and a high–pressure turbine.
B. A fan. a low–pressure compressor low–pressure turbine,and a high–pressure turbine.
C. A fan. a low–pressure compressor and a low–pressure turbine.
D. A low–pressure compressor and a low–pressure turbine
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WhatdoestheN2rotorconsistof？（）
A fan. a low–pressure compressor high–pressure compressor, a low–pressure turbine and a high–pressure turbine.
B. A low–pressure compressor high–pressure compressor. a low–pressure turbine and a high–pressure turbine.
C. A high–pressure compressor. a low–pressure turbine and a high–pressure
D. A high–pressure compressor and a high–pressure turbine
摆动油缸缓冲调节时，顺时针调节两摆缸上的调节螺栓使缓冲，逆时针调节两摆缸上的调节螺栓使缓冲
电气控制线路中常用文字符号中的QF代表__；KM代表_；KA代表；SB代表：KT代表
为了便于检修，蓄能器与管路之间安装有，为了防止液压泵停车或泄载时蓄能器内的压力油倒流，蓄能器与液压泵之间安装有
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