我国规定硝酸盐与亚硝酸盐用于肉类罐头不得超过
A.0.5g/kg
B.0.05g/kg
C.5mg/kg
D.0.5mg/kg
E.0.05mg/kg
参考答案:B
用括号内所给词适当形式填空。
1.The man ________(live) in a big city with his parents.
2.The two boys come from________ (French).
引起气性坏疽的病原菌是
A.金黄色葡萄球菌B.厌氧性链球菌C.变形杆菌D.梭状芽孢杆菌E.大肠杆菌