（）对于照明相当于雷达对于（）

A．灯光探测

B．明亮飞行

C．音乐舞蹈

D．太阳夜晚

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