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【单选题】
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.
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【单选题】某工业企业 2019 年度主营业务收入为 10000 万元 , 主营业务成本为 5560 万元 , 销售生产用原材料确认收入 100 万元 , 结转成本 60 万元 , 财务费用为 40 万元 , 营业外收入为 40 万元 , 营业外支出为 20 万元 , 所得税税率为 25%, 假定不考虑其他因素 , 该企业 2019 年度的净利润应为 ( ) 万元。
A.
3360
B.
3330
C.
3345
D.
3375
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A.
囊壳含水量高于15% 时囊壳
B.
加人二氧化钦使囊光易于识别
C.
制囊壳时加入山梨醇作抑菌剂
D.
囊壳编号数值越大,其容量越大
E.
胶囊壳的主要囊材是明胶
【单选题】血站对献血者每次采集血液量一般为（）
A.
100ml，两次采集间隔期不少于6个月
B.
100ml，两次采集间隔期不少于12个月
C.
200ml，两次采集间隔期不少于6个月
D.
300ml，两次采集间隔期不少于一年
E.
400ml，两次采集间隔期不少于一年
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A.
用户可以在浏览器中设置使用或者禁用 Cookie
B.
Cookie 的用途之一是存储用户在特定网站上的密码和 ID
C.
Cookie 以密文的方式在浏览器和服务器间传输
D.
Cookie利用网页代码中的HTTP头信息进行传递
【单选题】下面有关cookie说法错误的是______。
A.
用户可以在浏览器中设置使用或者禁用Cookie
B.
Cookie 的用途之一是存储用户在特定网站上的密码和ID
C.
Cookie 以密文的方式在浏览器和服务器间传输
D.
Cookie利用网页代码中的HTTP头信息进行传递
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A.
2000
B.
2400
C.
1800
D.
1600
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