DSC呼叫序列中,设备能够自动给出的信息是()
A、格式符
B、自识别
C、呼叫类别
D、呼叫地址
参考答案:B
._______ there is going to be a policy change ________ of those things is going to change. [ ]
A. Unless; few
B. Until; few
C. Unless; none
D. Until; none
汽车验收的目的。