—What happened last night?

—There was a fire in the hotel. Luckily, it was soon ________.

A．put out

B．handed out

C．turned off

D．put off

下列哪项不是氧化亚氮抑制造血功能的机制

A.吸入氧化亚氮3天以上可出现骨髓损害 

B.抑制组织细胞快速分裂 

C.可引起网织细胞/白细胞减少 

D.引起淋巴细胞胞质内空泡形成 

E.可能是其代谢产物的毒性作用所致