首页
登录
职称英语
Periodic realignment of the Earth’s magnetic field occurs two ways: t
Periodic realignment of the Earth’s magnetic field occurs two ways: t
游客
2024-01-11
39
管理
问题
Periodic realignment of the Earth’s magnetic field occurs two ways: the
first, "field regeneration", or the creation of new magnetic fields from the
ambient geomagnetic field, takes place because magnetic field lines are trapped
Line in effective electrical conductors. The field is trapped in molten iron which
(5) moves in response to the forces imposed upon it and as the core moves, the field
lines are stretched and twisted, creating a new magnetic field. The second
process is the diffusion of the magnetic fields: in the same way that a drop of
dye will soon diffuse throughout a swimming pool, a concentration of magnetic
field lines diffuses throughout the planet’s outer core. On the large scale of
(10) stars and planets, the field lines are caught up in the fluid motion and distorted,
generating a new magnetic field before diffusing away. This rarer type of field
reversal is likely caused by unexplained larger changes in the flow in the outer
core, though scientists have suggested such fluctuations may simply be extreme
examples of fluctuations in the dynamo processes-an El Nino in the weather of
(15) the outer core. [br] The author employs all of the following in the passage EXCEPT
选项
A、An illustrative analogy
B、An admission of uncertainty
C、A comparison of processes
D、The coining of a new term
E、A counter-example
答案
E
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3353312.html
相关试题推荐
Magneticresonanceimaging(MRI)—anoninvasivediagnosticprocedure—canbeusedt
X:Whenararebutseriousindustrialaccidentoccurs,peoplerespondbybelievi
Dostrongelectriccurrents,bymeansoftheelectromagneticfieldsthataccompa
ElNino,theperiodicabnormalwarmingoftheseasurfaceoffPeru,aphenomenon
Sunspots,vorticesofgasassociatedwithstrongelectromagneticactivity,arev
QuantityA:TheprobabilitythateventRoccursis0.38theprobabilitythateve
PeriodicrealignmentoftheEarth’smagneticfieldoccurstwoways:t
PeriodicrealignmentoftheEarth’smagneticfieldoccurstwoways:t
FERROUS:A、magneticB、rustyC、withnoironD、hydratedE、non-reactiveC
Sincemostifnotalllearningoccursthrough______,relatingoneobservationt
随机试题
Whatisthepurposeofthetalk?[originaltext]Goodmorning.I’mWilliamAnderso
Manyeducatorstodayinsistthateverygoodstorywillnotonlyattractitsview
Manyyoungpeoplebelievegoodgradesandexcellentinternshipswilllandth
对按照国家工程建设消防技术标准需要进行消防设计的建设工程,实行建设工程()制度
关于把握股票买卖时机选择策略分析的说法错误的是( )。A.从国家的宏观经济形势
巡视中发现设备标识脱落、辨识不清时,应(____)对标识进行维护或更换。立即$;
把下面的六个图形分为两类,使每一类图形都有各自的共同特征或规律,分类正确的一项是
A学校建设图书馆,该工程总建筑面积26800m2,总投资约10000万元,钢筋混
根据《城市生活无着的流浪乞讨人员救助管理办法实施细则》,救助站应当终止救助的情形
地下工程采用干拌法喷射混凝土掺用红星一型速凝剂时,拱部一次喷射厚度应控制在( )
最新回复
(
0
)