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
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
Chart depth is the ______.
A.vertical distance from the tidal datum to the ocean bottom, plus the height of tide
B.vertical distance from the tidal datum to the ocean bottom
C.average height of water over a specified period of time
D.average height of all low waters at a place
Charted depth is the ______.
A.vertical distance from the chart sounding datum to the ocean bottom,plus the height of tide
B.vertical distance from the chart sounding datum to the ocean bottom
C.average height of water over a specified period of time
D.average height of all low waters at a place
Chart depth is the ______.
A.vertical distance from the chart sounding datum to the ocean bottom, plus the height of tide
B.vertical distance from the chart sounding datum to the ocean bottom
C.average height of water over a specified period of time
D.average height of all low waters at a place
Charted depth is the ______.
A.vertical distance from the tidal datum to the ocean bottom plus the height of the tide
B.vertical distance from the tidal datum to the ocean bottom
C.average height of water over a specified period of time
D.average height of all low waters at a place
What information is found in the chart title?
A.Date of the first edition
B.Date of the edition and,if applicable,the revision
C.Information on the sounding datum
D.Information on which IALA buoyage system applies
A、工序基准与定位基准间的尺寸变化量 The dimensional variation between the operational datum and the location datum
B、本工序要保证的尺寸大小 The dimension of this operation be guaranteed
C、本工序要保证的尺寸精度 The dimensional accuracy of this operation be guaranteed
D、定位元件和定位基准本身的制造精度 The manufacturing accuracy of the location element and the location reference itself
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