视相,大气宁静度
参考答案:它是大气宁静度的一种量度,同大气湍流分布和变化密切相关。
The goods must be () in p wooden cases.
A.packing
B.packed
C.shipped
D.shipping
Your trousers ____dirty, you must have _____washed.
A.is; it
B.are; it
C.are; them
D.is; them