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【判断题】
在计算机控制系统中,所有的实时系统都是在线的系统。( )A.
正确
B.
错误
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【单选题】According to the Radio Regulations,vessels in distres()indicate their own position by any method.
A.
can not
B.
have the right to
C.
are not allowed to
D.
should get permission to
【简答题】DataList控件可以以自定义的格式显示各种数据源的字段,其显示数据的格式在创建的模板中定义,可以为数据项、分割项、 、 和编辑项等模板。
【单选题】A vessel，which does not normally engage in towing operations，is towing a vessel in distress.She ____.
A.
need not show the lights for a vessel engaged in towing，if it is impractical to do so
B.
may show the lights for a vessel not under command
C.
must show a yellow light above the stern light
D.
must show the lights for a vessel towing
【简答题】软件界面上“帮助”菜单的功能一般不包括______。
【单选题】When operating in areas beyond Inmarsat coverage, a GMDSS-equipped vessel must
A.
carry equipment capable of selecting any of the distress and safety DSC frequencies in the band 1605 - 27500 MHz
B.
maintain simultaneous DSC watch on 2765.5kHz, 6414.5 kHz, and at least one addi- tional distress and safety DSC frequency inthe band 1605 - 27500 kHz
C.
maintain simultaneous DSC watch on 2187.5 kHz, 8414.5 kHz, and at Ieast one addi tional distress and safety DSC frequency inthe band 1605 -27500 kHz
D.
carry VHF/UHF equipment capable of transm/tting and receiving on all distress and safety frequencies in the band 1605 - 27500 kHz using DSC, telephony and NBDP
【简答题】She feels very ( ) (distres s) because her beloved cat is dying. prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
【单选题】以下哪个表达式是不合法的?
A.
String x="Hello"; int y=9; x+=y;
B.
String x="Hello"; int y=9; if (x==y) { }
C.
DataOutputStreaString x="Hello"; int y=9; x=x+y; m()
D.
String x=null; int y=(x!=null)&&(x.length()>0) ? x.length() : 0
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