Did she read books? [ ]
A. No, she didn't.
B. No, he didn't.
C. Yes, I did.
答案:A
下列各接触途径对受试物急性毒性影响最大的是()
A.肌内注射
B.皮下注射
C.经口染毒
D.腹腔注射
E.吸入染毒
易装症