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The legend/symbol which designates an occluded front is represented by a（）.
The legend/symbol which designates an occluded front is represented by a（）.
A.red line
B.Purple line
C.blue line
D.dashed blue line
正确答案：Purple line
标签：
航海英语
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A generally circular low pressure area is called a（n）（）.
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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（）