A .0′.0
B .+2′.0
C .-2′.0
D .视海区内风、流方向而定
[单选题]某轮漂航,船上相对计程仪改正率ΔL=0%,海区内有流,流速2kn,1h后计程仪航程为()。A .0'.0B .+2'.0C .-2'.0D .视海区内风、流方向而定
[单选题]某轮船速15kn,顶风顺流航行,流速2kn,相对计程仪改正率ΔL=0%,航行2h后计程仪读数差为28',则该轮实际航程为()。A .32'B .34'C .24'D .30'
[单选题]某轮顶流航行,船速15kn,流速2kn,2h后相对计程仪读数差为32'.0,计程仪改正率-10%,则该轮实际航程为()。A .28'.8B .32'.8C .24'.8D .35'.2
[单选题]某轮顶流航行,船速15kn,流速2kn,2h后相对计程仪读数差为28'.0,计程仪改正率-10%,则该轮对水航程为()。A .25'.2B .29'.2C .21'.2D .30'.8
[单选题]某轮顺流航行,船速15kn,流速2kn,2h后相对计程仪读数差为32'.0,计程仪改正率-10%,则该轮实际航程为()。A .28'.8B .32'.8C .24'.8D .35'.2
[单选题]某轮顺流航行,船速15kn,流速2kn,2h后相对计程仪读数差为28'.0,计程仪改正率-10%,则该轮对水航程为()。A .30'.8B .34'.8C .26'.8D .25'.2
[单选题]某轮顶风顶流航行,船速18kn,流速2kn,风使船减速1kn,计程仪改正率-8%,0400计程仪读数L1=100'.0,则2h后相对计程仪读数L2为()。A .132'.6B .137'.0C .141'.3D .145'.7
[单选题]某轮顶风顶流航行,船速18kn,流速2kn,风使船减速1kn,计程仪改正率+8%,0400计程仪读数L1=100'.0,则2h后绝对计程仪读数L2为()。A .127'.8B .131'.5C .135'.2D .138'.9
[单选题]有风无流时,如计程仪改正率ΔL=0%,则相对计程仪航程(SL)和实际航程(SG)之间的关系为()。A .SL>SGB .SL=SGC .SL<SGD .视风的顺逆而定
[单选题]某轮船速12kn,航行2h后相对计程仪读数差为24'.0,计程仪改正率ΔL=0%,已知该轮实际航程为24nmile,则该轮航行在()中。A .无风流B .有风无流C .有流无风D .有风流