What is defined as and area, excluding sea areas A1 and A2, within the coverage of an INMARSAT geostationary satellite in which continuous alerting is available?A.Ocean Area Regions AOR-E, AOR-W, POR or IORB.Sea Area A3C.Sea Area A4D.Coastal and Inland Wa

题目

What is defined as and area, excluding sea areas A1 and A2, within the coverage of an INMARSAT geostationary satellite in which continuous alerting is available?

A.Ocean Area Regions AOR-E, AOR-W, POR or IOR

B.Sea Area A3

C.Sea Area A4

D.Coastal and Inland Waters


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更多“What is defined as and area, excluding sea areas A1 and A2, within the coverage of an INMA ”相关问题
  • 第1题:

    关系模式R(A1,A2,A3,A4,A5,A6),如果A2→(A3,A5); (A1,A3)→A6; (A2,A6)→A4,则R的候选键为_________。

    A.A2;

    B.(A1,A2);

    C.(A1,A3);

    D.(A2,A6);

    E.(A1, A2, A3)。


    C

  • 第2题:

    关系模式R(A1,A2,A3,A4,A5),如果(A1,A2)→A3,(A3,A4)→A5, 则R的候选键为_________。

    A.(A1,A2);

    B.(A1,A2,A5);

    C.(A1,A2,A4);

    D.(A1,A2,A3,A4);

    E.(A1, A2, A4, A5)。


    C

  • 第3题:

    5、关系模式R(A1,A2,A3,A4,A5),如果(A1,A2)→A3,(A3,A4)→A5, 则R的候选键为_________。

    A.(A1,A2);

    B.(A1,A2,A5);

    C.(A1,A2,A4);

    D.(A1,A2,A3,A4);

    E.(A1, A2, A4, A5)。


    B

  • 第4题:

    关系模式R(A1,A2,A3,A4,A5),如果(A1,A2)àA3,(A3,A4)àA5, 则R的候选键为_________。

    A.(A1,A2)

    B.(A1,A2,A5)

    C.(A1,A2,A4)

    D.(A1,A2,A3,A4)


    C

  • 第5题:

    【单选题】关系模式R(A1,A2,A3,A4,A5),如果(A1,A2)→A3,(A3,A4)→A5, 则R的候选键为_________。

    A.(A1,A2)

    B.(A1,A2,A5)

    C.(A1,A2,A4)

    D.(A1,A2,A3,A4)


    B

  • 第6题:

    5、关系模式R(A1,A2,A3,A4,A5),如果(A1,A2)→A3,(A3,A4)→A5,则R的候选键为________。

    A.(A1,A2,A5)

    B.(A1,A2)

    C.(A1,A2,A4)

    D.(A1,A2,A3,A4)


    B