[单选] Pan-Pan repeated three times over the radiotelephone indicates which type of message will follow?()
A . distress B . safety C . all clear D . urgency
烟草行业效益比较好,专卖体制和政策发挥了根本作用。()
简述103-J停车联锁动作过程。
烟草实行专卖,其目的是为了维护国家利益和烟草行业自身利益。()
怎样预防经血液传播艾滋病?
报效国家,回报社会,成就员工,是烟草行业的共同价值观。()
Pan-Pan repeated three times over the radiotelephone indicates which type of message will follow?()