單項(xiàng)選擇題在北半球f0〉0,垂直方向上何時(shí)必將出現(xiàn)慣性不穩(wěn)定?()

A.相對(duì)渦度大于0
B.相對(duì)渦度小于0
C.絕對(duì)渦度大于0
D.絕對(duì)渦度小于0


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