在南半球摩擦层中,风速和风向随高度增加的变化是()。
A.风速增大,风向不变
B.风速增大,风向向右偏转
C.风速增大,风向向左偏转
D.风速减小,风向向右偏转
参考答案:C
明长城东西起迄地点是 [ ]
A.西起临洮,东到辽东
B.西起临洮,东到山海关
C.东起鸭绿江,西到嘉峪关
D.东起辽东,西到嘉峪关
On a small boat,which knot is best suited for attaching a line to the ring of an anchor?()
A.Clove hitch
B.Figure-eight knot
C.Fisherman's bend
D.Overhand knot