测者眼高为16m,物标高程为16m,则物标能见地平距离为()nmile。 ["A.6.27","B.8.36","C.14.63","D.16.72"]
简述稳定岗位的工艺过程?
航海上,公式DH(nmile)=2.09是用于计算()。 ["A.测者能见地平距离","B.物标能见地平距离","C.物标地理能见距离","D.雷达地理能见距离"]
测者眼高为9m,物标高程为16m,则测者能见地平距离为()nmile。 ["A.6.27","B.8.36","C.14.63","D.6.67"]
测者眼高为9m,物标高程为16m,则物标能见地平距离为()nmile。 ["A.6.27","B.8.36","C.14.63","D.6.67"]
密度是指(),以符号()表示,单位为()或()。