CSCF信令跟踪包括按链路跟踪、按用户跟踪、（）等信令跟踪方式。
参考答案：按IP跟踪
But for these spelling mistakes, I ______a full mark in my last English examination.[ ]
A．got
B．had got
C．would get
D．would have got
票据贴现、转贴现的期限最长不得超过（）个月，贴现期限为从贴现之日起到票据到期日止。
A.6
B.3
C.12
D.1
r these spelling mistakes, I ______a full mark in my last English examination.[ ]