2.Perform operation test of TCAS by resetting circuit breaker of TCAS.

题目

2.Perform operation test of TCAS by resetting circuit breaker of TCAS.
a) Reset the circuit breaker of TCAS so that the operation of TACS works.
b) The way to do the TACS operation test is to reset the TCAS circuit breaker.
c） Do an operational test to make sure that the TCAS works ok.

答案

选B,原句：执行TCAS的操作考试通过重新设置TCAS的断路器.主要考BY的意思,是途径,不是结果.