可用于静脉注射脂肪乳的乳化剂是A．阿拉伯胶 B．西黄芪胶 C．豆磷脂 D．脂肪酸山梨

读“太阳光照图”，回答第1-2题。

小题1:图示季节

A．西欧的温带落叶阔叶林纷纷落叶

B．夏威夷高压势力强盛

C．黄河进入枯水期

D．船只向西过北印度洋顺风顺水小题2:此时

A．地方时大小顺序是A＞B＞C

B．正午太阳高度角的大小顺序是A＞B＞C

C．白昼长短的大小顺序是A＞B＞C

D．自转线速度的大小顺序是A＞B＞C

男性，45岁，发热、咳嗽1周，曾少量咳痰伴痰中带血3次。胸片示右中叶 3cm×3cm类圆形阴影，中间可见空洞，无液平。痰找结核菌1次，结果阴性，胸部CT示空洞为偏心空洞，部分洞壁有结节状隆起。进一步的检查应首先考虑

A．重复痰找结核菌

B．试验性抗感染治疗

C．试验性抗结核治疗

D．纤维支气管镜活检

E．肿瘤标志物检查

关于中倍数泡沫灭火系统的说法正确的是（）。

A．水渍损失小，灭火效率高，灭火后泡沫易于清除

B．能扑灭立式钢质储油罐内的火灾

C．一般用于控制或扑灭易燃、可燃液体、固体表面火灾及固体深位阴燃火灾

D．不宜与水枪和喷雾系统同时使用

女性，30岁，间歇性进食哽噎，胸骨后憋胀，偶有呕吐4年，伴消瘦，食管吞钡造影，见食管贲门部呈“鸟嘴样”改变，应诊断为( )

A．食管炎
B．食管腐蚀性狭窄
C．贲门失弛症
D．食管癌
E．食管痉挛

Recent epidemiological studies have shown that the residents of Greenborough County have substantially higher rates of pancreatic and stomach cancer than do the residents of the state as a whole. Researchers have concluded that the high rates of these cancers are due to the presence in the county of a large petrochemical facility that manufactures chemicals known to be carcinogenic.
Which of the following, if true, most weakens the researchers’ conclusion ？（）

A. The county’s residents have the highest rate in the state of smoking, a habit that has been conclusively linked with higher rates of several types of cancer.

B. The residents of the county get their water from springs that could not have been contaminated by the petrochemical plant implicated by the researchers.

C. The petrochemical plant has been found to be in violation of EPA emissions standards five times in the last two years.

D. Residents of Greenborough County, like people throughout the state, are fond of spicy and fatty foods that have been linked to a number of health problems.

E. There are no known medical treatments that can permanently halt the development of certain forms of pancreatic cancer.