尽快纠正急性一氧化碳中毒组织缺氧应首选的治疗措施是()。
A.采用高浓度氧气面罩
B.注射呼吸兴奋剂
C.撤离中毒现场
D.人工呼吸
E.高压氧舱
参考答案:E
His father made him _____ homework first. [ ]
A. to do
B. do
C. doing
D. is doing
呼吸性粉尘,采掘面每3个月测定1次,其他地点每6个月测定1次。