海船船员考试

单选题At all angles of inclination, the metacenter is().A vertically above the center of buoyancyB vertically above the center of gravityC at the intersection of the upright vertical centerline and the line of action of the buoyant forceD at the geometric ce

题目
单选题
At all angles of inclination, the metacenter is().
A

vertically above the center of buoyancy

B

vertically above the center of gravity

C

at the intersection of the upright vertical centerline and the line of action of the buoyant force

D

at the geometric center of the underwater volume

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相似问题和答案

第1题:

That REMOVE ANY LIST ON THE V/L AFTER EACH WATCH END means that ______.

A.any list,no matter where it is posted,shall be removed prior to ending his watch by the OOW

B.the vessel should not be removed

C.any and all lists on board the vessel should be taken off

D.the inclination of the vessel should be corrected prior to ending his watch by the OOW


正确答案:D

第2题:

At all angles of inclination, the metacenter is ______.

A.vertically above the center of buoyancy

B.vertically above the center of gravity

C.at the intersection of the upright vertical centerline and the line of action of the buoyant force

D.at the geometric center of the underwater volume


正确答案:A
在所有的倾斜角中,横稳心在浮心的垂直上方。

第3题:

__________

[A] tendency [B] advantage [C] inclination [D] priority


正确答案:B

第4题:

If the vertical center of gravity (VCG) of a ship rises 1.7 feet, the righting arm (GZ) for the various angles of inclination will ______.

A.decrease

B.increase

C.remain unchanged

D.be changed by the amount of GG’ x cosine of the angle


正确答案:A
假如船舶的垂直重心高度(VCG)上升1.7英尺,回复力矩(GZ)在不同的倾斜角时将减少。

第5题:

For small angles of inclination, if the KG were equal to the KM, then the vessel would have __________.

A.position stability

B.negative stability

C.neutral stability

D.maximum stability


正确答案:C
对于小角度倾角,如果KG和KM相等,船舶成随遇平衡状态。

第6题:

A floating vessel will behave as if all of its weight is acting downward through the ______.

A.center of gravity

B.center of buoyancy

C.center of floation

D.Metacenter


正确答案:A
一漂浮船舶的各项重力的合力在重心处。

第7题:

For a floating vessel, the center of buoyancy and the metacenter are in the line of action of the buoyant force ______.

A.only when there is positive stability

B.only when there is negative stability

C.only when there is neutral stability

D.at all times


正确答案:D
对于漂浮的船舶,浮心和横稳心一直都在浮力的作用线上。

第8题:

Cross curves of stability show which of the following?

A.The righting arms at various angles of inclination and displacement

B.The metacentric height at large angles of heel

C.The height of the center of buoyancy at various angles

D.The metacentric radius at various displacements


正确答案:A

第9题:

GM cannot be used as an indicator of stability at all angles of inclination because ______.

A.M is not fixed at large angles

B.there is no M at large angles

C.G is not fixed at large angles

D.there is no G at large angles


正确答案:A
GM值不能用于表示船舶所有倾斜角的稳性因为在大的横倾角时M点不是固定点。

第10题:

骨盆倾斜度(inclination of pelvis)


正确答案: 指妇女直立时,骨盆入口平面与地平面所形成的角度,一般为60°。

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