营运机动车在高速公路上下客的，对车辆所属经营单位处（）罚款。
A、一万
B、二万
C、三万
D、四万
参考答案：A
He was not really in the mood for anything ______ it dawned on him that it had not been his fault.
A．since
B．when
C．after
D．until
以下属于通信安全质量指标的是( )。
A．总包邮件延误率B．给据邮件网上信息正确率C．机要邮件总包失密丢损率D．用户平均等待时间
