边界层辐合线在新一代天气雷达反射率因子图上呈现为(),强度从几个dBZ到十几个dBZ。
参考答案:窄带回波
—Where are you going this Sunday?
—I am _____ time with my friends. [ ]
A. visiting
B. spending
C. staying
D. spend
下列化合物有芳香性的是: