泪道冲洗时,水由下泪小点进入,自上泪小点流出。未见脓性分泌物,其诊断为()
A.泪小管阻塞
B.泪小点阻塞
C.泪小管炎
D.慢性泪囊炎
E.鼻泪管阻塞
参考答案:E
John is one of the staff members who ___to be sent abroad for further study.
A.is going
B.are going
C.have been going
D.has been going.
探测站当前自检信息包括哪些?