the actual depth
added to or subtracted from the charted depth
multiplied by the charted depth
divided by the charted depth
第1题：
Tide in this water area is________in direction ENE.
A.getting
B.setting
C.being
D.having
第2题：
The height of tide is the ______.
A.depth of water at a specific time due to tidal effect
B.difference between the depth of the water and the area's tidal datum
C.difference between the depth of the water and the high water tidal level
D.difference between the depth of the water at high tide and the depth of the water at low tide
第3题：
The distance between the surface of the water and the tidal datum is the______．
A.height of tide
B.charted depth
C.actual water depth
D.range of tide
第4题：
To predict the actual depth of water using the Tide Tables，the number obtained from the Tide Tables is ______．
A.the actual depth
B.added to or subtracted from the charted depth
C.multiplied by the charted depth
D.divided by the charted depth
第5题：
The period at high or low tide during which there is no change in the height of the water is called the ______.
A.range of the tide
B.plane of the tide
C.stand of the tide
D.reversing of the tide
第6题：
The distance between the surface of the water and the tidal datum is the ______.
A.range of tide
B.height of tide
C.charted depth
D.actual water depth
第7题：
The meaning of ebb tide is that ______.
A.tide is falling from high water to low water
B.tide is rising from low water to high water
C.tide is reaching to a highest level
D.tide is reaching to a lowest level
第8题：
The water level showing in a boiler water gauge glass is usually ( ) duringworking.
A.higher than the actual drum water level
B.equal to the actual drum water level
C.increasing due to steam condensation in the glass
D.lower than actual drum wafer level
第9题：
The datum from which the predicted heights of tides are reckoned in the tide tables is ______.
A.mean low water
B.the same as that used for the charts of the locality
C.the highest possible level
D.given in table three of the tide tables
第10题：
Air gap is the vertical distance between the bottom of the hull and the ______．
A.Still water level
B.Wave crest
C.Wave crest plus the charted water depth and tidal corrections
D.Wave crest plus the charted water depth and tidal correction and storm surge