The best estimate of the wind direction at sea level can be obtained from observing the direction of the ______.A.cloud movementB.vessel headingC.wavesD.swells

题目

The best estimate of the wind direction at sea level can be obtained from observing the direction of the ______.

A.cloud movement

B.vessel heading

C.waves

D.swells

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更多“The best estimate of the wind direction at sea level can be obtained from observing the di ”相关问题

  • 第1题：

    SHIFT OF WIND DIRECTION IN AN ANTICLOCKWISE MANNER, FOR EXAMPLE FROM NORTH TO WEST ( OPPOSITE OF VEERING ) defines ______.

    A.Backing (of wind)

    B.Veering (of wind)

    C.Shifting of wind

    D.altering of wind


    正确答案：A
    风使逆时针旋转的，例如北到西，定义为反转。

  • 第2题：

    What is placed on the underside of an inflatable liferaft to help prevent it from being skidded by the wind or overturned?

    A.Ballast bags

    B.A keel

    C.Strikes

    D.Sea anchor


    正确答案：A

  • 第3题：

    In the absence of a route leading from seaward，the conventional direction of buoyage generally follows ______．

    A.an anti-clockwise direction around land masses

    B.a clockwise direction around land masses

    C.an anticlockwise direction around sea masses

    D.a clockwise direction around sea masses


    正确答案：B

  • 第4题：

    The velocity of the apparent wind can be more than the true wind，and come from the same direction，if certain conditions are present．One condition is that the ______．

    A.Ship's speed must be less than the true wind velocity

    B.True wind must be from dead astern

    C.True wind velocity must be faster than the ship's speed

    D.True wind must be from dead ahead


    正确答案：D

  • 第5题：

    The best olive oil is obtained from olives that are harvested just after they ripen.

    A:preserved
    B:squeezed
    C: sorted
    D:gathered

    答案：D
    解析：
    句意：最好的橄榄油是从一成熟就被采摘下来的橄榄中获取的。harvest意为“收获”, ripen意为“成熟”。D. gather意为“收集”，与harvest意思相近；A. preserve意为 “保存”;B. squeeze意为“挤压”;C. sort意为“分类”。

  • 第6题：

    For each blank，choose the best answer from the four choices and write down on the answer sheet.
    （ ）is a six bytes OSI layer 2 address which is burned into every networking device that provides its unique identity for point to point communication.
    （ ）is a professional organization of individuals in multiple professions which focuses on effort on lower-layer protocols.
    （请作答此空）functions with two layers of protocols.It Can connect networks of different speeds and can be adapted to an environment as it expands.
    （ ）is the popular LAN developed under the direction of the IEEE 802.5.
    （ ）is the popular backbone technology for transmitting information at high speed with a high level of fault tolerance which is developed under the direction of ANSI.

    A.The hub
    B.The bridge
    C.The router
    D.The proxy

    答案：B
    解析：
    MAC地址就是在媒体接入层上使用的地址，通俗点说就是网卡的物理地址，现在的MAC地址一般都采用6字节48bit。
    IEEE是由多个研究底层协议的机构组成的权威组织。
    以太网是共享介质的，物理层接收帧，如果地址和自己的地址一致（或者是广播消息），就留下；反之则转发。因此当主机的数量增加时，网络就会变得十分嘈杂，传送效率明显降低。而网桥是工作在数据链路层的设备，它将一个大型的以太网分为几个小网段，可以取得减少通信量的作用。
    令牌环网是一种符合IEEE802.5标准的局域网。监督帧，即令牌，顺序地从一个网站传递到相临的网站上。希望获得网络访问权的网站必须等到令牌到达之后才能传输数据。
    光纤分布数据接口是目前成熟的LAN技术中传输速率最高的一种。这种传输速率高达100Mb/s的网络技术所依据的标准是ANSIX3T9.5。该网络具有定时令牌协议的特性，支持多种拓扑结构，传输媒体为光纤。使用光纤作为传输媒体具有多种优点：
    较长的传输距离，相邻站间的最大长度可达2km，最大站间距离为200km。
    具有较大的带宽，FDDI的设计带宽为100Mbit/s。
    具有对电磁和射频干扰抑制能力，在传输过程中不受电磁和射频噪声的影响，也不影响其他设备。
    光纤可防止传输过程中被分接偷听，也杜绝了辐射波的窃听，因而是最安全的传输媒体。

  • 第7题：

    单选题
    If the current and wind are in the same direction，the sea surface represents a wind speed （）.
    A

    lower than actually exists

    B

    higher than actually exists

    C

    that actually exists

    D

    that has no proportional relationship


    正确答案： B
    解析： 暂无解析

  • 第8题：

    多选题
    A RequestDispatcher can be obtained from which two objects？ （）
    A

    ServletConfig

    B

    ServletContext

    C

    HttpServletRequest

    D

    HttpServletResponse


    正确答案： C,D
    解析： 暂无解析

  • 第9题：

    单选题
    How can you estimate the position of a tropical storm’s center?（）
    A

    With a radio weather bulletin or weather fax

    B

    using shipboard radar

    C

    observe the wind direction and apply Buys Ballot's law

    D

    All of the above


    正确答案： B
    解析： 暂无解析

  • 第10题：

    单选题
    In rough weather，when a ship is able to maneuver，it is best to launch a lifeboat（）.
    A

    on the lee side

    B

    on the windward side

    C

    with the wind dead ahead

    D

    with the wind from astern


    正确答案： C
    解析： 暂无解析

  • 第11题：

    单选题
    A wind blows round anticlockwise defines（）.
    A

    backing ( of wind )

    B

    beach ( to )

    C

    veering ( of wind )

    D

    maintaining direction of the wind


    正确答案： A
    解析： 暂无解析

  • 第12题：

    单选题
    Manoeuvring information can not be obtained from（）.
    A

    construction plans

    B

    sea trials

    C

    calculation estimates

    D

    SMS procedure file


    正确答案： A
    解析： 暂无解析

  • 第13题：

    If the current and wind are in the same direction，the sea surface represents a wind speed ______.

    A.lower than actually exists

    B.higher than actually exists

    C.that actually exists

    D.that has no proportional relationship


    正确答案：A

  • 第14题：

    When recording the wind direction in the weather log，you would report the ______．

    A.direction the wind is blowing toward

    B.direction the wind is blowing from

    C.duration of the maximum gust of wind

    D.wind chill factor


    正确答案：B

  • 第15题：

    When operating in an area where sea ice and icebergs are present，which statement is TRUE ________．

    A.Icebergs may travel in a direction many degrees different from the sea ice

    B.Both icebergs and sea ice will move in approximately the same direction and at the same speed

    C.Icebergs and sea ice will move in the same direction，but at different speeds due to the sail effect of the berg

    D.Icebergs and sea ice will move in the same direction，but the iceberg will move slower because of its underwater bulk


    正确答案：A

  • 第16题：

    In the Northern Hemisphere a wind is said to veer when the wind ______.

    A.changes direction clockwise, as from north to east, etc

    B.changes direction counterclockwise, as from south to east, etc

    C.changes direction violently and erratically

    D.remains constant in direction and speed


    正确答案：A
    在北半球大风的风向会顺时针旋转，例如北到东。

  • 第17题：

    For each blank，choose the best answer from the four choices and write down on the answer sheet.
    （ ）is a six bytes OSI layer 2 address which is burned into every networking device that provides its unique identity for point to point communication.
    （请作答此空）is a professional organization of individuals in multiple professions which focuses on effort on lower-layer protocols.
    （ ）functions with two layers of protocols.It Can connect networks of different speeds and can be adapted to an environment as it expands.
    （ ）is the popular LAN developed under the direction of the IEEE 802.5.
    （ ）is the popular backbone technology for transmitting information at high speed with a high level of fault tolerance which is developed under the direction of ANSI.

    A.ISO
    B.ANSI
    C.CCITT
    D.IEEE

    答案：D
    解析：
    MAC地址就是在媒体接入层上使用的地址，通俗点说就是网卡的物理地址，现在的MAC地址一般都采用6字节48bit。
    IEEE是由多个研究底层协议的机构组成的权威组织。
    以太网是共享介质的，物理层接收帧，如果地址和自己的地址一致（或者是广播消息），就留下；反之则转发。因此当主机的数量增加时，网络就会变得十分嘈杂，传送效率明显降低。而网桥是工作在数据链路层的设备，它将一个大型的以太网分为几个小网段，可以取得减少通信量的作用。
    令牌环网是一种符合IEEE802.5标准的局域网。监督帧，即令牌，顺序地从一个网站传递到相临的网站上。希望获得网络访问权的网站必须等到令牌到达之后才能传输数据。
    光纤分布数据接口是目前成熟的LAN技术中传输速率最高的一种。这种传输速率高达100Mb/s的网络技术所依据的标准是ANSIX3T9.5。该网络具有定时令牌协议的特性，支持多种拓扑结构，传输媒体为光纤。使用光纤作为传输媒体具有多种优点：
    较长的传输距离，相邻站间的最大长度可达2km，最大站间距离为200km。
    具有较大的带宽，FDDI的设计带宽为100Mbit/s。
    具有对电磁和射频干扰抑制能力，在传输过程中不受电磁和射频噪声的影响，也不影响其他设备。
    光纤可防止传输过程中被分接偷听，也杜绝了辐射波的窃听，因而是最安全的传输媒体。

  • 第18题：

    单选题
    When operating in an area where sea ice and icebergs are present，which statement is TRUE? （）
    A

    Icebergs may travel in a direction many degrees different from the sea ice

    B

    Both icebergs and sea ice will move in approximately the same direction and at the same speed

    C

    Icebergs and sea ice will move in the same direction，but at different speeds due to the sail effect of the berg

    D

    Icebergs and sea ice will move in the same direction，but the iceberg will move slower because of its underwater bulk


    正确答案： C
    解析： 暂无解析

  • 第19题：

    单选题
    In the Northern Hemisphere a wind is said to veer when the wind（）.
    A

    Changes direction clockwise，as from north to east，etc

    B

    Changes direction violently and erratically

    C

    Remains constant in direction and speed

    D

    Changes direction counterclockwise，as from south to east，etc


    正确答案： B
    解析： 暂无解析

  • 第20题：

    单选题
    The best estimate of the wind direction at sea level can be obtained from observing the direction of the（）.
    A

    cloud movement

    B

    vessel heading

    C

    waves

    D

    swells


    正确答案： A
    解析： 暂无解析

  • 第21题：

    单选题
    When a wind is permanently changing the direction from which it blows, it is（）.
    A

    variable

    B

    changing

    C

    backing

    D

    veering


    正确答案： B
    解析： 暂无解析

  • 第22题：

    单选题
    The overall set in Malacca straight is to the NW, but from May to September there is a tendency for SE sets to prevail in some N and central parts.In this sentence,“set”refers to（）.
    A

    The direction of traffic flow

    B

    The direction of current

    C

    The direction of monsoon

    D

    The direction of wind


    正确答案： C
    解析： 暂无解析

  • 第23题：

    单选题
    In the Northern Hemisphere，your vessel is believed to be in the direct path of a hurricane，and plenty of sea room is available. The best course of action is to bring the wind on the（）.
    A

    starboard bow，note the course，and head in that direction

    B

    starboard quarter，note the course，and head in that direction

    C

    port quarter，note the course，and head in that direction

    D

    port bow，note the course，and head in that direction


    正确答案： A
    解析： 暂无解析

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