液体和固体消毒剂浓度均不能用的表述方法是()。
A.%(w/w)
B.mg/L
C.ml/L
D.g/m
E.g/kg
参考答案:D
解析:g/m是气体物质的单位。
用放射性核素治疗骨转移癌,疗效较好的原发肿瘤为()。
A.胃癌
B.肝癌
C.肾癌
D. * * 癌
E.前列腺癌
More than one person ____ made the suggestion. [ ]
A. was
B. has
C. were
D. have