Post two lookouts with ().
A、sextant
B、compass
C、radar
D、binoculars
A、sextant
B、compass
C、radar
D、binoculars
A、one mast B、two masts: with the mizzen stepped abaft the rudder post C、two masts: with the mizzen stepped forward of the rudder post D、two masts: a foremast and a mainmast
A、a single mast B、two masts: with the mizzen stepped abaft the rudder post C、two masts: with the mizzen stepped forward of the rudder post D、at least two masts: a foremast and a mainmast
A、Open equipment pack B、Post a lookout C、Issue anti-seasickness medicine D、Pick up other survivors
A、T1WI低信号,T2WI高信号 B、T1WI高信号,T2WI低信号 C、T1WI和T2WI呈等信号 D、T1WI和T2WI呈低信号 E、T1WI和T2WI呈高信号,但T2WI信号有所衰减
A、T1WI低信号,T2WI高信号 B、T1WI高信号,T2WI低信号 C、T1WI和T2WI均呈低信号 D、T1WI和T2WI均呈等信号 E、T1WI和T2WI句呈高信号,但T2WI信号有所衰减