A client has a nasogastric tube inserted at the time of abdominal perineal resection with permanent colostomy. This tube will most likely be removed when the client demonstrates which of the following（）

A. Absence of nausea and vomiting.

B. Absence of stomach drainage for 24 hours.

C. Passage of mucus from the rectum.

D. Passage of flatus and feces from the colostomy.

实验室加热油品着火，该如何选用灭火材料或器具？