在北半球，克里奥利如何影响风向？
参考答案：
在低压区周围逆时针旋转。
Mrs. White as well as her twins _______ the dancing club. [ ]
A. is going to join
B. is going to join in
C. are going to join
D. are going to join in
如图QH31两臂下垂，五指伸开，手心朝上，全臂向上挥动，该指挥的手势信号表示的意思是（）。
A.翻转
B.微速起钩
C.慢速起钩
D.全速起钩
两臂下垂，五指伸开，手心朝上，全臂向上挥动，该指挥的手势信号表示的意思是（）。