食积之乳食内积型可依情选用（）
A.消乳丸
B.健脾丸
C.保和丸
D.异功散
E.不换金正气散
参考答案：A, C
导热油的热稳定性是由其化学组成而决定的，就热稳定性而言，（）是石油中最稳定的烃类。
A.烷烃
B.环烷烃
C.芳香烃
D.混合烃
Which of the following is true about him
A．He always makes mistakes.
B．He is forty.
C．He likes numbers about everything.
D．He is overcritical.
