单项选择题
A.chartplotter B.C-MAP NT C.C-Cards D.PPI
Radar reflectors are required for（）.A.all fishing vesse...
单项选择题Radar reflectors are required for（）.
A.all fishing vessels over 39 feet in length B.sail-propelled fishing vessels C.all fishing vessels of less than 200 GT D.wooden hull fishing vessels with a poor radar echo
PPI is（）.A.a plan-position indicator systemB.pulse-plan...
单项选择题PPI is（）.
A.a plan-position indicator system B.pulse-plan integration C.pulse-pulse input D.power-plan input
Although manual plotting for CPA works well，the workloa...
单项选择题Although manual plotting for CPA works well，the workload can become overwhelming when confronted with（）.
A.one target B.two targets C.three targets D.a large number of targets
