When adjusting a magnetic compass usin

When adjusting a magnetic compass using the fore-and-aft permanent magnets，you should（）.

Ause the magnets one at a time，putting one in one side and then one on the opposite side，one step higher
Buse the magnets in pairs，starting at the top，with trays at the highest point of travel
Cuse the magnets in pairs，from the bottom up，with the trays at the lowest point of travel
Dfill all the trays with magnets，then remove them one-by-one until the deviation is removed

参考答案

参考解析：

分类：磁罗经与陀螺罗经的使用题库

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（）.Anorth magnetic poleBsouth magnetic poleCmagnetic prime vertical meridianDmagnetic equator

2、Magnetic compass deviation（）.

Magnetic compass deviation（）.Avaries depending upon the bearing usedBis the angular difference between magnetic north and compass northCis publish...

3、The error in a magnetic compass caused

The error in a magnetic compass caused by the vessel’s magnetism is called（）.AvariationBdeviationCcompass errorDbearing error

4、When a magnetic compass is not in use

When a magnetic compass is not in use for a prolonged period of time it should（）.Abe shielded from direct sunlightBbe locked into a constant headingChave any air bubbles replaced with nitrogenDhave the compensating magnets removed

5、Before a magnetic compass is adjusted

Before a magnetic compass is adjusted certain correctors must be checked to ensure that they are free of permanent magnetism. These correctors ...

6、When placed in a magnetic field, which

When placed in a magnetic field, which of the materials listed will maintain the highest permeability?（）AGlassBBakeliteCSoft ironDAluminum

编辑推荐

下面（）属于经验性商品...

35kV及以下电力电缆头有终端头和（）两种。..

此模式依赖于躯干、头颈和肢体的位置，其最基本的模式即上、.....

旅客车票、行李票、包裹票、和货物运单是合同或者合同的组成.....

关于双缩脲法测蛋白质叙述错误的是（）..

由于法兰的合金钢螺栓用于高压高温处，所以在安装时应用火焰.....