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
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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
核技术应用放射性废物库选址初选的目标是通过对区域初步调查和初步评价，选出()个候选场址。
A. 1-2
B. 2-3
C. 3-4
D. 4-5
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