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一带电粒子垂直磁感应线射入匀强磁场，则它作___运动； With the electric particle vertical magnetic induction line into the uniform magnetic field, it makes ___motion;
A．直线； straight lines;
B．变速率圆周； speed change rate of the circumference;
C．匀速率圆周； uniform speed of the circumference;
D．螺线； spiral;
参考答案和解析
匀速率圆周； uniform speed of the circumference;
更多 “一带电粒子垂直磁感应线射入匀强磁场，则它作___运动； With the electric particle vertical magnetic induction line into the uniform magnetic field, it makes ___motion;A．直线； straight lines;B．变速率圆周； speed change rate of the circumference;C．匀速率圆周； uniform speed of the circumference;D．螺线； spiral;” 相关考题
考题
Permanent magnetism is caused by ______.A.operation of electrical equipment and generators on board shipB.the earth's magnetic field affecting the ship's hard iron during constructionC.the horizontal component of the earth's magnetic field acting on the horizontal soft ironD.the vertical component of the earth's magnetic field acting on the vertical soft iron
考题
Prior to magnetic particle inspection of anchor chain，the chain should be ______．A.DegaussedB.DemagnetizedC.SoakedD.Sandblasted
考题
Magnetic dip is a measurement of the angle between the ______.A.geographic pole and the magnetic poleB.lubber’s line and true northC.horizontal and the magnetic line of forceD.compass heading and the magnetic heading
考题
单选题关于带电粒子的运动，下面各种说法中，正确的是（ ）．A
沿着电场线方向飞入匀强电场，电场力做功，动能增加B
沿着磁感线方向飞入匀强磁场，磁场力做功，动能增加C
垂直电场线方向飞入匀强电场，在电场中运动，电场力不做功D
垂直磁感线方向飞入匀强磁场，在磁场中运动，磁场力不做功
考题
单选题The magnetic compass magnets are acted on by the horizontal component of the Earth’s total magnetic force. This magnetic force is GREATEST at the（）.A
north magnetic poleB
south magnetic poleC
magnetic prime vertical meridianD
magnetic equator
考题
单选题The coil of wire rotating in the magnetic field produces the（）.A
voltageB
currentC
powerD
frequency
考题
单选题Prior to magnetic particle inspection of anchor chain，the chain should be（）.A
degaussedB
demagnetizedC
soakedD
sandblasted
考题
单选题The horizontal angle between the magnetic meridian and the north-south line of the magnetic compass is（）.A
deviationB
variationC
compass errorD
dip
考题
单选题The vertical component of the Earth’s magnetic field causes induced magnetism in vertical soft iron. This changes with latitude. What corrects for this coefficient of the deviation? （）A
The Flinders barB
The heeling magnetC
Quadrantal soft iron spheresD
Bar magnets in the binnacle
考题
单选题During the transition of the Earth’s magnetic field _____.A
the compass will become uselessB
man and animals will be confused as to directionsC
the magnetic strength of the Earth will disappearD
the magnetic strength of the Earth will be stronger
考题
单选题The greatest directive force is exerted on the magnetic compass when the（）.A
needles are nearly in line with the meridianB
vessel is near the magnetic polesC
variation is near zeroD
vessel is near the magnetic equator
考题
单选题Magnetic dip is a measurement of the angle between the（）.A
geographic pole and the magnetic poleB
lubber's line and true northC
horizontal and the magnetic line of forceD
compass heading and the magnetic heading
考题
单选题According to the passage, _____.A
we should not worry about the transition of the Earth’s magnetic fieldB
the Earth’s magnetic field will not change for at least 2000 yearsC
the Earth’s magnetic field has decreased its strength rapidlyD
the transition of the Earth’s magnetic field can be controlled by modern science
考题
单选题The magnetic compass operates on the principle that（）.A
like magnetic poles attractB
unlike magnetic poles repelC
unlike poles attractD
the poles of the compass line up with the geographic poles of the earth
考题
单选题The line which connects the points of zero magnetic dip is（）.A
An agonic lineB
The magnetic equatorC
A magnetic meridianD
All of the above
考题
单选题Permanent magnetism is caused by（）.A
operation of electrical equipment and generators on board shipB
the earth's magnetic field affecting the ship's hard iron during constructionC
the horizontal component of the earth's magnetic field acting on the horizontal soft ironD
the vertical component of the earth's magnetic field acting on the vertical soft iron
考题
单选题The American Petroleum Institute recommends magnetic particle inspection for（）.A
anchor chainB
wire ropeC
connecting linksD
pendant wires
考题
单选题The vertical angle between the horizontal and the magnetic line of force is the（）.A
elevationB
magnetic angleC
vertical angleD
dip
考题
单选题At the magnetic equator there is no induced magnetism in the vertical soft iron because（）.A
the lines of force cross the equator on a 0°-180°alignmentB
the quadrantal error is 0°C
there is no vertical component of the Earth's magnetic fieldD
the intercardinal headings have less than 1°
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