光电跟踪切割,必须在钢板上划线,才能进行跟踪切割。( )
参考答案:错
Today I’d like to talk about how to become a (1) . Usually you have to start at the beginning. That is, you have to begin (2) of some sort on a local newspaper, a (3) , maybe on a small magazine -- work (4) . Now there aren’t that many organizations which have large numbers of foreign correspondents so you also have to (5) with that aim (6) . Another way of doing it is to work abroad, and work as (7) . That’s somebody who sells stories, and gets paid (8) , to newspapers and magazines and so on. And hoping to (9) that way, and eventually to be offered a (10) .I don’t really know (11) are needed, but obviously a degree in modern languages or (12) would be very useful. But, a degree in itself probably wouldn’t (13) . It wouldn’t be enough to get you job. It wouldn’t (14) to make an editor decide to (15) . So it’s difficult to define the (16) . You’re going to need (17) and the ability to assimilate information (18) and then produce stories which (19) of the newspaper or radio or television station you (20) .
女性患者,68岁,慢性支气管炎、肺气肿12年。2d前剧烈咳嗽后,突然左侧胸痛伴呼吸困难,不能平卧,可能的诊断是
A.肺炎球菌肺炎B.肺栓塞C.心肌梗死D.自发性气胸E.结核性胸膜炎