亚硝酸盐食物中毒的机制是
A．巯基酶失活
B．胆碱酯酶活性被抑制
C．溶血作用
D．低铁血红蛋白氧化成高铁血红蛋白
E．毛细血管扩张
参考答案：D
The criminal, as well as some ____________ people, was arrested by the police yesterday.
A．relevant
B．skilled
C．released
D．lucky
地震时的应急防护方法是什么？
