A V-shaped ripple with the point of the V pointing upstream in a river may indicate a __________.
A
submerged rock, not dangerous to navigation
B
sunken wreck, not dangerous to navigation
C
towed-under buoy
D
All of the above
E
İlgili Sorular
The signal man assisting the crane operator has his arm extended, his fingers closed, and his thumb ...The Moon rises earlier on succeeding days when the __________.You are releasing carbon dioxide gas (CO2) into an engine§compartment to extinguish a fire. The CO2 ...The principal action in changing from transit to survival draft in the event heavy weather threatens...You are reading the draft marks in illustration D032DG. The water level is at the top of number 8. W...