对前来门诊的患者，护士应首先进行
A．预检分诊
B．健康教育
C．心理安慰
D．卫生指导
E．消毒隔离
参考答案：A
— Where is John, do you know?
— He ________ Changsha on business. He ________ in two days. [ ]
A. has been to; will come back
B. has gone to; will be back
C. has been in; would come back
D. has gone to; come back
系统设计的设备状态共有多少种（）
A.6
B.5
C.16
D.10
