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
点击查看答案&解析
相关考题
-
单项选择题
A predictable result of a vessel nearing a bank or edge of a channel is that the（）.
A.stern is drawn to the bank as the bow sheers off
B.bow sheers toward the bank
C.vessel continues in a straight line，but with greatly reduced maneuverability
D.vessel will be drawn bodily into the bank unless the engines are stopped -
单项选择题
A precaution you should take before bunkering is to （） .
A.plug the vents
B.plug the sounding pipes
C.plug the scuppers
D.close the lids on the vents -
单项选择题
A position that is obtained by using two or more intersecting lines of position taken at nearly the same time，is a(n) （）.
A.fix
B.running fix
C.estimated position
D.dead-reckoning position
