Any piece of metal on becoming magnetized will develop regions of concentrated magnetism called ______．A.fluxB.polesC.magnetsD.azimuth

题目

Any piece of metal on becoming magnetized will develop regions of concentrated magnetism called ______．

A.flux

B.poles

C.magnets

D.azimuth

相似考题

1.28． The number of listeners is becoming larger because__________．A． the radio is easy to carryB． the radio is good for blind people and many old peopleC． the radio can be used at any timeD．A，B and C

2.for any piece of writing, __________ is the final stage before one hands in the final draft.A. proofreadingB. editingC. revisingD. conferencing

3.Are there any clues and hints for us to piece together to gain a better understanding of the matter? (英译汉)

4.We drop a piece of metal into a jar full of water, the metal will float if it weighs less than______.A. an equal amount of silverB. an equal amount of goldC. all the water in the jar nowD. the water that leaves the jar

更多“Any piece of metal on becoming magnetized will develop regions of concentrated magnetism c ”相关问题

  • 第1题：

    A poster is any piece of printed paper designed to be attached to a wall or vertical surface.()


    正确答案:对

  • 第2题：

    A vessel would be referred to as "stiff" when the weight of the cargo is ______.

    A.evenly distributed vertically and the double bottoms are full

    B.concentrated low and the double bottoms are empty

    C.concentrated low and the double bottoms are full

    D.concentrated high and the double bottoms are empty


    正确答案：C

  • 第3题：

    The magnetism in the various structures of a ship changing as a result of cruising，vibration，or aging is termed ______．

    A.permanent magnetism

    B.subpermanent magnetism

    C.induced magnetism

    D.variable magnetism


    正确答案：B

  • 第4题：

    Magnetism which is present only when the material is under the influence of an external field is called ______.

    A.permanent magnetism

    B.induced magnetism

    C.residual magnetism

    D.terrestrial magnetism


    正确答案：B
    表现为仅仅当材料在外部磁场的影响下才有磁性叫做感应磁性。

  • 第5题：

    Why are the 1300 nm and 1550 nm regions of the fiber spectrum primarily used for optical communications?（）

    • A、They are both regions of lowest loss.
    • B、They are both regions of low reflections.
    • C、They are both regions of low index of refraction.
    • D、They are both regions of low chromatic dispersion.
    • E、They are both regions of low Polarization Mode Dispersion (PMD).

    正确答案:A

  • 第6题：

    It is prohibited to carry any（）on the plane

    • A、contraband
    • B、forbidden article
    • C、dangerous article
    • D、metal items

    正确答案:A,B,C

  • 第7题：

    单选题
    Any piece of metal on becoming magnetized will develop regions of concentrated magnetism called（）.
    A

    flux

    B

    poles

    C

    magnets

    D

    azimuth


    正确答案： D
    解析： 暂无解析

  • 第8题：

    单选题
    This induced magnetism（）the permanent magnetism already present in the ship.
    A

    will add to

    B

    will subtract from

    C

    may add to or subtract from

    D

    will not change


    正确答案： D
    解析： 暂无解析

  • 第9题：

    单选题
    The magnetism in the various structures of a ship changing as a result of cruising，vibration，or aging is termed（）.
    A

    permanent magnetism

    B

    subpermanent magnetism

    C

    induced magnetism

    D

    variable magnetism


    正确答案： A
    解析： 暂无解析

  • 第10题：

    单选题
    Why are the 1300 nm and 1550 nm regions of the fiber spectrum primarily used for optical communications?（）
    A

    They are both regions of lowest loss.

    B

    They are both regions of low reflections.

    C

    They are both regions of low index of refraction.

    D

    They are both regions of low chromatic dispersion.

    E

    They are both regions of low Polarization Mode Dispersion (PMD).


    正确答案： E
    解析： 暂无解析

  • 第11题：

    单选题
    The Flinders bar and the quadrantal spheres should be tested for permanent magnetism at what interval（）.
    A

    They are not subject to permanent magnetism; no check is necessary

    B

    Semiannually

    C

    Annually

    D

    Every five years


    正确答案： B
    解析： 暂无解析

  • 第12题：

    单选题
    Why are the 1300 nm and 1550 nm regions of the fiber spectrum primarily used for optical communications？（）
    A

     They are both regions of lowest loss.

    B

     They are both regions of low reflections.

    C

     They are both regions of low index of refraction.

    D

     They are both regions of low chromatic dispersion.

    E

     They are both regions of low Polarization Mode Dispersion （PMD）.


    正确答案： A
    解析： 暂无解析

  • 第13题：

    Why are the 1300 nm and 1550 nm regions of the fiber spectrum primarily used for optical communications?()

    A. They are both regions of lowest loss.

    B. They are both regions of low reflections.

    C. They are both regions of low index of refraction.

    D. They are both regions of low chromatic dispersion.

    E. They are both regions of low Polarization Mode Dispersion (PMD).


    参考答案：A

  • 第14题：

    A ship under construction or major repair will acquire permanent magnetism due to ______ while sitting stationary in the earth's magnetic field．

    A.hammering and jarring

    B.vibration and pounding

    C.varying magnetic fields

    D.stable or permanent magnetism of the ship


    正确答案：A

  • 第15题：

    A single vertical magnet placed underneath the compass in the binnacle is used to compensate for ______．

    A.The horizontal component of the permanent magnetism

    B.Deviation caused by the vessel's inclination from the vertical

    C.Induced magnetism in the horizontal soft iron

    D.Induced magnetism in the vertical soft iron


    正确答案：B

  • 第16题：

    标有“Magnetized Material”字样的标签是（）标签。

    • A、远离热源
    • B、包装件向上
    • C、深冷液化气体
    • D、磁性物质

    正确答案:D

  • 第17题：

    A technician dropped a screw in the case of a desktop computer. Which of the following toolsshould be used to retrieve the screws?（）

    • A、Computer vacuum
    • B、Plastic tweezers
    • C、Canned air
    • D、Screwdriver with magnetized tip

    正确答案:B

  • 第18题：

    金属物品用英语表示为（）

    • A、metal object
    • B、metal thing
    • C、metal goods
    • D、metal item

    正确答案:A,B,D

  • 第19题：

    单选题
    To function properly, oil control rings used on a diesel engine piston must distribute sufficient oil to all parts of the cylinder wall and must also（）.
    A

    prevent any lubricant from reaching

    B

    prevent excessive lubrication from reaching the combustion space

    C

    Provide metal-to-metal contact to seal the cylinder against blow-by

    D

    assure a positive means of scraping carbon accumulation from the cylinder


    正确答案： C
    解析： 暂无解析

  • 第20题：

    单选题
    Prior to reading an aneroid barometer，you should tap the face lightly with your finger to（）.
    A

    expose any loose connections

    B

    demagnetize the metal elements

    C

    bring the pointer to its true position

    D

    contract and expand the glass face


    正确答案： C
    解析： 暂无解析

  • 第21题：

    单选题
    When a vessel changes course from one cardinal heading to another cardinal heading whilea djusting the compass，which action should be taken?（）
    A

    The course change should be made rapidly to prevent transient induced magnetism while passing the intercardinal headings

    B

    After the new heading is reached，the vessel should steam on that course for at least two minutes before the adjustment

    C

    During the course change，you should gently tap the compass to remove any error caused by friction on the pivot bearing

    D

    After steadying on the new heading，the compass card should be slewed by a magnet and allowed to oscillate freely to remove any gaussin error


    正确答案： C
    解析： 暂无解析

  • 第22题：

    单选题
    The Flinders bar on a magnetic compass compensates for the（）.
    A

    induced magnetism in vertical soft iron

    B

    induced magnetism in horizontal soft iron

    C

    permanent magnetism in ship's steel

    D

    vessel's inclination from the vertical


    正确答案： D
    解析： 暂无解析

  • 第23题：

    单选题
    A ship under construction or major repair will acquire permanent magnetism due to（）while sitting stationary in the earth’s magnetic field.
    A

    hammering and jarring

    B

    vibration and pounding

    C

    varying magnetic fields

    D

    stable or permanent magnetism of the ship


    正确答案： B
    解析： 暂无解析

相关内容