单项选择题
A radar range to a small，charted object such as a light will provide a line of position in which form? （）
A.Straight line
B.Arc
C.Parabola
D.Hyperbola
点击查看答案
相关考题
-
单项选择题
A quick and rapid motion of a ship in a seaway is an indication of a(n) （）.
A.large GM
B.high center of gravity
C.excessive free surface
D.small GZ -
单项选择题
A pumproom is suspected of accumulating gases after a ventilation machinery breakdown. Where should the combustible gas indicator case be placed when testing the pumproom atmosphere for combustible gases? （）
A.In the lower level of the pumproom
B.In the middle level of the pumproom
C.In the upper level of the pumproom
D.On the deck outside the pumproom -
单项选择题
A psychrometer has two thermometers that provide dry bulb and wet bulb temperatures. By comparing these two temperature readings with a set of tables you can determine the （）.
A.atmospheric pressure
B.wind speed
C.relative humidity and dew point
D.wind chill factor
