问题 问答题 案例分析题

某患者因腹泻1天前来就诊。临床检查无腹痛,亦无里急后重感,体表凉;每天腹泻十几次,粪便外观呈稀水样,量多,逐渐呈灰白色水样便,伴呕吐;患者神志淡漠并感口渴。此时需做何必要检查?若TCBS平板上出现较大黄色菌落,如何进一步鉴定?

答案

参考答案:

粪便标本直接涂片镜检、动力和制动试验:革兰染色阴性弧菌,呈穿梭样运动有助于诊断霍乱弧菌;直接荧光抗体染色和抗体凝集试验:应用01群和0139群霍乱弧菌的多价和单价抗血清进行凝集,可快速诊断霍乱弧菌感染;粪便标本碱性蛋白胨水增菌;粪便标本接种选择性平板,如TCBS、庆大霉素平板分离培养;霍乱毒素的测定。

氧化酶试验:霍乱弧菌应为阳性;血清凝集试验:挑选可疑菌落进行01群和0139群霍乱弧菌的多价和单价抗血清作凝集反应;生化鉴别试验:如霍乱红试验、粘丝试验、0/129敏感试验,其中包括古典生物型和EI-Tor生物型的鉴别试验等,如多粘菌素B敏感试验。

填空题
单项选择题

The great advance (91) rocket theory 40 years ago showed that liquid-fuel rockets were far (92) in every respect to the skyrocket with its weak solid fuel, the only kind of rocket then known. (93) , during the last decade, large solid-fuel rockets with (94) fuels about as powerful as liquid fuels have (95) their appearance, and it is a favorite layperson’s question to (96) which one is "better". The question is meaningless. (97) might as well ask whether a gasoline or a diesel engine is "better". It all (98) on the purpose. A liquid-fuel rocket is complicated, (99) has the advantage that it can be controlled beautifully. The burning of the rocket engine can be stopped completely; it can be reignited when (100) . (101) , the thrust can be made to vary by adjusting the speed of the fuel pumps. A solid-fuel rocket, on the other hand, is rather (102) in construction, (103) hard to build when a really (104) size is desired. But once you have a solid-fuel rocket, it is ready for action (105) very short notice. A liquid-fuel rocket has to be fueled first and cannot be (106) readiness for very long after it has been fueled. (107) , once a solid-fuel rocket has been ignited, it will keep burning. It cannot be stopped and reignited (108) desired (it could conceivably be stopped and reignited after a pre-calculated time of burning has elapsed, and its thrust cannot be varied. Because a solid-fuel rocket can be kept ready for a long time, most military missiles (109) solid fuels, but human-piloted spaceflight needs the fine adjustments that can (110) be provided by liquid fuels.

A.However

B.Therefore

C.But

D.On the contrary