经测试,此系统无故障。( )
A.This system still works after test. B.Test shows no faults in this system. C.This system is inoperative before test.正确答案B
经测试,此系统无故障。( )
A.This system still works after test. B.Test shows no faults in this system. C.This system is inoperative before test.正确答案B