具有潜在危害的食品,在常温条件下存放时间过长，会引起微生物大量繁殖。()
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能够与肥大细胞和嗜碱性粒细胞结合介导I型变态反应发生的抗体是
A. IgA
B. IgG
C. IgM
D. IgE
E. IgD
需经常冲洗场所的地面应有的坡度至少大于3.5%。()
以下不属于肝纤维化诊断指标的是
A. 透明质酸
B. 层黏蛋白
C. HI型胶原前肽
D. F型胶原
E. 干扰素
The power developed by a large slow-speed main propulsion diesel engine is dependent upon
A. quantity of air it takes in and retains in the cylinders during a given time period
B. proportion of trapped air that is utilized in the combustion process
C. thermodynamic efficiency of the engine cycle
D. all of the above
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