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单选题
The by-pass section of the engine by-passes a portion of the normal engine airflow (either ram or compressed air) for the prime purpose of adding to engine thrust or reducing specific fuel consumption.
A
The bypass section of the engine redirects a portion of the unusual airflow (whether it＇s ram air or compressed air) with the main objective of increasing thrust or decreasing fuel consumption in the engine.
B
The bypass section of the engine redirects a portion of the usual airflow (whether it＇s ram air or compressed air) with the main objective of increasing thrust or decreasing fuel consumption in the engine.
C
The bypass section of the engine is used to change the usual airflow (whether it＇s ram air or compressed air) to diminish thrust or decrease fuel consumption in the engine.
答案解析
正确答案：B
