放射性核素毒性权重系数A类为
A.0.01
B.0.1
C.1.0
D.10
E.100
参考答案:E
填空题。
1. One and one is _____.
2. Three and two is _____.
3. Seven minus (减) four is .
4. Eleven minus seven is .
5. Fourteen minus eight is _____.
结核分枝杆菌化学组成最显著的特点是含有大量的()。
A.蛋白质
B.脂类
C.多糖
D.RNA
E.磷壁酸