油脂的主要卫生问题是
A．真菌毒素、多环芳烃、棉酚B．甲醇、杂醇油、醛类C．重金属污染D．微生物、有害化学物质污染E．亚硝基化合物污染
参考答案：A
下列哪项为非抗原特异性循环免疫复合物的补体参与检测技术()
A．PEG比浊法
B．C1q固相法
C．mRF凝胶扩散试验
D．Raji细胞法
E．超速离心法
— _____ Will you please say it again?
—Sure. I said that they were going shopping.[ ]
A. Pardon
B. Don't mention it
C. Never mind
D. I 'm sorry
