肝性脑病患者给予肠道消毒剂最主要的目的是()
A.消除致病菌的毒素
B.减少毒菌的繁殖
C.抑制肠道细菌减少氨的形成
D.预防原发性腹膜炎
E.防止继发性肠道感染
参考答案:C
When he realized the police had spotted him,the man__the exit as quickly as possible.
A.made off
B.made for
C.made out
D.made up
香精是由香料按照一定的配方调和而成的。按照香料在香精中所起的作用可分为主香剂、头香剂、辅助剂、()剂。