会见合影时的礼宾次序，主人居中，（）。 A.主客双方随意站列 B.主客双方前后排列

病历摘要：处方：乳糖88.8g、糖粉38.0g、10%硝酸甘油乙醇溶液0.6g、硝酸甘油、淀粉浆、适量、硬脂酸镁1.0g、制成1000片（每片含硝酸甘油0.5mg）

下列关于硝酸甘油片的叙述错误的是 （）

A.首先制成空白颗粒，将硝酸甘油的乙醇溶液拌入空白颗粒的细粉中

B.为缩短干燥时间，应在80℃干燥

C.作为舌下片，硝酸甘油片的硬度不宜大

D.应注意混合的均匀性，可过两次筛

E.制备过程中应防止受热

退火的定义和目的？

The fact that most Americans live in urban areas does not mean that they reside in the center of large cities. In fact, more Americans live in the suburbs of large metropolitan areas than in the cities themselves.
The Bureau of the Census regards any area with more than 2,500 people as an urban area, and does not consider boundaries of cities and suburbs.
According to the Bureau, the political boundaries are less significant than the social and economic relationships and the transportation and communication systems that integrate a locale. The term used by the Bureau for an integrated metropolis is an MSA, which stands for Metropolitan Statistical Area. In general, an MSA is any area that contains a city and its surrounding suburbs and has a total population of 50,000 or more.
At the present time, the Bureau reports more than 280 MSAs, which together account for 75 percent of the US population. In addition, the Bureau recognizes 18 megapolises, that is, continuous adjacent metropolitan areas. One of the most obvious megapolises includes a chain of hundreds of cities and suburbs across 10 states on the East Coast from Massachusetts to Virginia, including Boston, New York, and Washington, D.C. In the Eastern Corridor, as it is called, a population of 45 million inhabitants is concentrated. Another megapolis that is growing rapidly is the California coast from San Francisco through Los Angeles to San Diego.

Why does the author mention the Eastern Corridor and the California coast in Paragraph 4

A．As examples of megapolises.

B．Because 75 percent of the population lives there.

C．TO conclude the passage.

D．The Bureau of the Census is located ther

沙门菌感染肠炎型（食物中毒），哪一项不正确（）

A.是最常见的沙门菌感染，由摄入大量鼠伤寒沙门菌、猪霍乱沙门菌等污染的食物引起

B.主要症状为发热、恶心、呕吐、腹痛、腹泻，一般3~5天内较快恢复

C.潜伏期6~24小时

D.常为集体性食物中毒

E.病后多见带菌者

患者男性，69岁，因“夜尿次数增多伴尿急半年余，加重1周”就诊。患者就诊后完善了相关检查，包括前列腺特异性抗原（PSA）、尿常规、直肠指检、经直肠超声、前列腺MRI及尿流动力学检查。

下列哪项指标提示患者具备前列腺切除术的手术指征。（）

A.膀胱出口轻度梗阻

B.膀胱顺应性下降.

C.膀胱过度活动

D.最大尿流率Q_max<10ml/s

E.膀胱收缩力下降

F. * * 内压降低