barometer()
A、气压计
B、温度计
C、六分仪
D、主罗经
A、气压计
B、温度计
C、六分仪
D、主罗经
A、check it with a barometer on another vessel B、take readings from several barometers and average them C、check it with the barometer at the ship chandlery D、check it against radio or National Weather Service reports of the immediate vicinity
A、A.check it with a barometer on another vessel B、B.take readings from several barometers and average them C、C.check it with the barometer at the ship chandlery D、D.check it against radio or National Weather Service reports of the immediate vicinity
A、adjust the barometer B、indicate any change in the reading of the barometer C、provide a correction for height above sea level D、provide a correction for temperature changes