在斟倒香槟酒时每斟一杯最好分两次完成，以免杯中泛起的泡沫溢出。（）

On inflatable liferafts，the operating cord should be renewed by（）.

A.cutting the old line off and renewing same

B.an approved servicing facility ashore

C.opening the case and replacing the entire line

D.one of the ship's officers