单项选择题

治疗上应补充氯化钾

A.pH7.2，PaCO275mmHg，BE-15
B.pH7.35，PaCO270mmHg，BE+10
C.pH7.50，PaCO265mmHg，BE+21
D.pH7.50，PaCO225mmHg，BE-5
E.pH7.35，PaCO245mmHg，BE+2

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单项选择题

女患，21岁。患红皮病，皮肤瘙痒。近1周来寒战，高热，咳嗽，咯血痰，呼吸急促。查体：两肺散在湿性啰音，左下皮肤有破口结痂。胸片示双肺外侧散在小片状阴影。WBC总数32×109／L，中性粒细胞0.90。最可能的诊断是

A.血源性肺脓肿
B.血行播散性肺结核
C.细叶性肺炎
D.肺转移癌
E.肺结节病

未分类题

Viruses are human-made software programs【B1】specifically to wreak havoc on personal computers and networks. The【B2】of contracting one of these computer viruses over the Internet has increased dramatically. Typically, you get a virus by opening e-mail【B3】.Some viruses are relatively【B4】to individuals. They just【B5】themselves to【B6】messages or e-mail themselves to all the people listed in your address book. The sudden flood of e-mail【B7】mail servers, causing the system to【B8】.Other viruses are more【B9】and may lie asleep until a certain datE.Then they【B10】to life to do their dirty【B11】. Sometimes a strange message appears on your screen, or data and programs may be【B12】. In the worst case, all the contents of your hard drive may be【B13】out. These【B14】programs start on one computer, then replicate quickly,【B15】other computers around the worlD.In 1988, a student at Cornell University sent out a virus by【B16】, nearly【B17】the Internet to its knees. More recently, the 'I Love You' virus caused over $1 billion in lost【B18】as it【B19】e-mail systems worldwidE.Last year【B20】, 10,000 new viruses, worms and Trojan horses were unleasheD.【B1】A.existedB.discoveredC.createdD.manufactured

A.B.
C.
D.
【B1】
A.existed
B.discovered
C.created
D.manufactured

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