哪项属于生产环境的有害因素（） ["矽尘、煤尘、有机粉尘","X射线、γ射线","过度心理紧张","附于皮毛上的炭疽杆菌","有毒工段与无毒工段设在同一车间"]
盆腔内水样密度肿块，增强后周边明显环形强化（） ["子宫肌瘤","子宫颈癌","卵巢畸胎瘤","卵巢囊肿","盆腔脓肿"]
血浆纤维蛋白原减少（） ["多发性骨髓瘤","肾小管功能损伤","肾小球滤膜通透性增加","弥漫性血管内凝血","缺铁性贫血"]
哪项属于生产工艺过程的化学因素（） ["矽尘、煤尘、有机粉尘","X射线、γ射线","过度心理紧张","附于皮毛上的炭疽杆菌","有毒工段与无毒工段设在同一车间"]
烷基化原料所使用的轻烯烃主要是（） ["乙烯","丁烯","戊烯","己烯"]
弯曲试验的目的是什么？
