计算机使用手机、小灵通或红外线、蓝牙技术等与外网相联，不管是否浏览过网上信息，均为已联入外网。
参考答案：对
被称为中国近代海军人才的摇篮的教育机构是( )。
A．天津水师学堂
B．福建船政学堂
C．江南水师学堂
D．福州电报学堂
Which signal is recognized as a distress signal?（）
A.Directing the beam of a searchlight at another vessel
B.A smoke signal giving off orange colored smoke
C.A whistle signal of one prolonged and three short blasts
D.International Code Signal "PAN" spoken over the radiotelephone
