具有缓释作用的液体制剂
A.30℃以下B.接近37℃C.10粒D.3粒E.5粒
参考答案:C
简述探索夏文化的方法。
When evacuating a seaman by helicopter lift,which statement is TRUE?()
A.The vessel should be stopped with the wind dead ahead during the hoisting operation
B.Flags should be flown to provide a visual reference as to the direction of the apparent wind
C.The drop line should be grounded first then secured as close to the hoist point as possible
D.The hoist area should be located as far aft as possible so the pilot will have a visual reference while approaching