下列何种毒物可经乳汁进入乳儿体内
A．铅、汞、苯
B．二氧化硅
C．硅酸盐
D．石棉
E．煤尘
参考答案：A
解析：铝、苯、汞等能随乳汁进入乳儿体内。
Zhang Yining vs Wang Nan _______ 7: 00 p. m. today. Hurry and buy your ticket. [ ]
A. in
B. on
C. with
D. at
磁盘的存储容量与其尺寸的大小成反比。( )
