A、one meter from the tank bottom and one meter below the tank top
B、one half the ullage of the tank and one meter below the tank top
C、one half the ullage of the tank and one meter above the tank bottom
D、at three meter intervals from the tank top to the bottom
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A、a straight line drawn on the chart approximates a great circle B、the chart should not be used outside of the standard parallels C、the course angle is measured at the mid-longitude of the track line D、distance cannot be measured directly from the chart
A、When the instance is started B、When the database is mounted C、When the database is opened D、When the database is closed
A、precaution measures B、safety measures C、security measures D、emergency response measures
A、A."slow" direction, just before the 12 o'clock position B、B."fast" direction, just after the 12 o'clock position C、C."fast" direction, just before the 12 o'clock position D、D."slow" direction, just after the 12 o'clock position
A、the meridian through the object of the bearing B、the meridian through the ship's position C、the meridian midway between the ship and the object D、any meridian
A、take no measures B、extinguish the fire as soon as possible C、feed water to the boiler D、open the blow down valve
A、in series with the power source and load B、in parallel with the power source and load C、insuring correct polarity D、using the lowest range possible to prevent instrument damage
A、used to measure the speed of wind B、in which the pressure of the air is measured C、that tells which direction a storm is coming from D、used to measure the height of waves
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