为保证食品安全，下灌注管的清洗消毒不能与含（）的消毒液接触。
A、氯
B、碘
C、铝
D、金属离子
参考答案：A, B
康复评定、康复治疗的基本概念属于（）
A.基础知识
B.相关专业知识
C.临床知识
D.专业知识
E.专业实践能力
You'd better cut your hair short. Our school doesn't _____ long hair. [ ]
A. approve of students wearing
B. approve students to wear
C. approve students wearing
D. approve of students to wear
