海船船员考试

单选题For a floating vessel,the result of subtracting KG from KM is the().A height of the metacenterB height of the righting armC height of the center of buoyancyD metacentric height

题目
单选题
For a floating vessel,the result of subtracting KG from KM is the().
A

height of the metacenter

B

height of the righting arm

C

height of the center of buoyancy

D

metacentric height

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相似问题和答案

第1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2题:

A vessel’s LCG is determined by ______.

A.dividing the total longitudinal moment summation by displacement

B.dividing the total vertical moment summation by displacement

C.multiplying the MTl by the longitudinal moments

D.subtracting LCF from LCB


正确答案:A
重心高度是由排水量分配在总的垂向力矩上的重心高度。

第3题:

下面程序段的输出结果是( )。 public class Test { public static void main ( String[] args) { int result=0; for ( int i=1;i<=5;i++) { if ( i%2==0 ) continue; result + =i; } System. out. println ("result is " + result ); } }

A.result is 7

B.result is 8

C.result is 9

D.result is 10


正确答案:C
解析:continue语句跳过循环体中下面尚未执行的语句,回到循环体的开始继续下轮循环。所以题目中程序实现的是求1到5的所有奇数的和,即1+3+5=9,所以选C。

第4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5题:

For a floating vessel, the center of flotation is the point in the waterplane ______.

A.about which the vessel lists and trims

B.which coincides with the center of buoyancy

C.which, in the absence of external forces, is always vertically aligned with the center of gravity

D.which is shown in the hydrostatic tables as VCB


正确答案:A
对漂浮船,漂心是水线面上的一点,船舶绕该点横倾或纵倾。

第6题:

A vessel’s KG is determined by ______.

A.dividing the total longitudinal moment summation by displacement

B.dividing the total vertical moment summation by displacement

C.multiplying the MTl by the longitudinal moments

D.subtracting LCF from LCB


正确答案:B
重心高度是有排水量分配在总的垂向力矩上的中心高度

第7题:

Although KG for a vessel in lightweight is relatively high, the vessel is stiff because ___.

A.KM is small

B.KM is high

C.BL is small

D.KB is large


正确答案:B
虽然船舶空载时KG相对大,但是船舶稳性大因为KM大。

第8题:

When is the density of the water required to be logged in the logbook of a ship?

A.Any time the vessel moves from water of one density into waters of a different density

B.Prior to getting underway when the vessel is floating in fresh or brackish water

C.Only when the vessel moves from fresh water into salt water

D.The density of the water is not required to be logged in the unofficial logbook


正确答案:B

第9题:

For a floating vessel, the result of subtracting KG from KM is the ______.

A.height of the metacenter

B.height of the righting arm

C.height of the center of buoyancy

D.metacentric height


正确答案:D
对于漂浮的船舶,KM减去KG的结果是稳性高度。

第10题:

In small angle stability, the metacentric height ______.

A.is found in the hydrostatic tables for a level vessel

B.multiplied by the displacement yields the righting moment

C.is always positive

D.is calculated by subtracting KG from KM


正确答案:D
在小角度稳性中,稳性高度通过KG减KM被计算出来。

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