The angle measured at the observer’s meridian from the elevated pole,clockwise or counterclockwise up to 180°,to the vertical circle of the body is the().
- Alocal hour angle
- Bazimuth angle
- Cmeridian angle
- Dlongitude
The angle measured at the observer’s meridian from the elevated pole,clockwise or counterclockwise up to 180°,to the vertical circle of the body is the().
1、At an angle of loll,the righting arm (
At an angle of loll,the righting arm (GZ) is().AmaximumBnegativeCpositive,but reflexiveDzero
2、The fog most commonly encountered at s
The fog most commonly encountered at sea is called().Aconduction fogBradiation fogCfrontal fogDadvection fog
3、The angle at which the anchor flukes p
The angle at which the anchor flukes penetrate the soil is the().Aburial angleBpenetration angleCfluke angleDholding angle
4、As observed from the Earth,the angle b
As observed from the Earth,the angle between lines from the Earth to the Sun and the Earth to an inferior planet is known as().AelongationBconjunctionCoppositionDquadrature
5、In the U. S., at Christmas, schoolchil
In the U. S., at Christmas, schoolchildren have ______ for holiday.A a monthB a weekC two weeksD three weeks
6、If a line at right angles to the axis
If a line at right angles to the axis rotates about that axis and, at the same time, moves parallel to the axis, it will generate ().Aa helixBa helicoidalCa curveDa cone