判断肺结核有无传染性最主要的依据是
A.结核菌素试验阳性
B.血沉增快
C.反复痰中带血
D.胸部X线有空洞
E.痰结核杆菌检查阳性
参考答案:E
.
—What are you busy with?
—The conference___________in our city next week, as you know.
A.held
B.will be held
C.be holding
D.to be held
信息系统开发工作的完成是以编码工作的结束为标志的。