服务通告中程序的执行是强制的.
A.It is standard to do the procedure in this service bulletin. B.It is necessary to do the procedure in this service bulletin. C.It is mandatory to do the procedure in this service bulletin.正确答案C
服务通告中程序的执行是强制的.
A.It is standard to do the procedure in this service bulletin. B.It is necessary to do the procedure in this service bulletin. C.It is mandatory to do the procedure in this service bulletin.正确答案C