桔梗含有皂苷，能刺激胃或咽喉黏膜，反射性引起恶心呕吐，使支气管腺体分泌增加，痰液稀释，而易于咳出。（）
参考答案：对
Two family members are arguing in a child's room. They start to hit each other and the child is crying. What's the most appropriate nursing action ？（）
A．Call security to come and intervene.
B．Remove the child from the room.
C．Ask one of the family members to leave the room.
D．Try to reason with both family members.
干式喷射机喷射混凝土时（）。
A.装入喷射机的是混合干料
B.装入喷射机的是湿料
C.在喷头处加水拌湿喷出
