海船船员考试
单选题What is an advantage of the magnetic compass aboard vessels?（）A Compass error is negligible at or near the earth's magnetic polesB It does not have to be checked as oftenC It is reliable due to it's essential simplicityD All points on the compass rose
题目
Compass error is negligible at or near the earth's magnetic poles
It does not have to be checked as often
It is reliable due to it's essential simplicity
All points on the compass rose are readily visible
相似问题和答案
第1题：
A vessel is heading magnetic north and its magnetic compass indicates a heading of 003°. What action should be taken to remove this error during compass adjustment?
A.Move the quadrantal spheres closer to the compass
B.Raise the heeling magnet if the red end is up
C.Remove some of the Flinders bar
D.Raise or lower the athwartship magnets
第2题：
What may NOT be used when securing heavy vehicles aboard Ro-Ro vessels ________．
A.Chain lever
B.Turnbuckle
C.Webbing
D.Chain
第3题：
The advantage(s) of using wire rope lashing on vehicles aboard Ro-Ro vessels is that it__.
A.is lighter than chain
B.has a good working life
C.is not affected by temperature
D.All of the above
滚装船上使用钢丝绳绑扎的优点是比链条更轻便，有更长的使用寿命，不受温度影响。
第4题：
Magnetic heading differs from compass heading by______．
A.compass error
B.true heading
C.variation
D.Deviation
磁首向不同于罗经首向在于自差。
第5题：
If a magnetic compass is not affected by any magnetic field other than the Earth’s which statement is TRUE?______.
A.Compass error and variation are equal
B.Compass north will be true north
C.Variation will equal deviation
D.There will be no compass error
若磁罗经不受除了地磁意外的任何磁场的影响，哪个叙述是对的？罗经差和磁差一样的。
第6题：
What is used when securing heavy vehicles aboard Ro-Ro vessels ________．
A.Buckle or ratchet tensioner
B.Webbing
C.Manila rope
D.None of these
第7题：
Deviation is the angle between the ______.
A.true meridian and the axis of the compass card
B.true meridian and the magnetic meridian
C.magnetic meridian and the axis of the compass card
D.axis of the compass card and the degaussing meridian
自差是磁子午线与罗经盘的轴之间的角。
第8题：
Which one of the followings is incorrect about magnetic compass?______.
A.The magentic compass is compulsory on my vessel
B.The magentic compass is prone to error
C.The magentic compass is always placed inside steel constructions
D.The magentic compass needs to be calibrated to compensate for local magnetic distortion
关于磁罗经下面哪项是不正确的？磁罗经总是放在刚性结构里面。
第9题：
Magnetic compass deviation______．
A.varies depending upon the bearing used
B.is the angular difference between magnetic north and compass north
C.is published on the compass rose on most nautical charts
D.is the angular difference between geographic and magnetic meridians
磁罗经自差是磁北与罗北之间的差角。
第10题：
Magnetic dip is a measurement of the angle between the ______.
A.geographic pole and the magnetic pole
B.lubber’s line and true north
C.horizontal and the magnetic line of force
D.compass heading and the magnetic heading
磁倾角是地平和磁力线夹角的测量。