问题
单项选择题
What is the distance from the bottom of a wave trough to the top of a wave crest?（）
A.Wave length
B.Wave height
C.Wave breadth
D.wave depth
答案
参考答案：B
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What is the distance from the bottom of a wave trough to the top of a wave crest?（）
A.Wave length
B.Wave height
C.Wave breadth
D.wave depth
参考答案：B