怠速工况需要供给多而浓（α＝0.6～0.8）的混合气。
参考答案：错
喷射性呕吐伴剧烈头痛 （）
A.急性肠炎
B.晕车
C.胆石症
D.脑炎
E.急性下壁心肌梗死
Both the teammates of the former and present football clubs of Beckham were amazed when they discovered his behavior. True False
