常用于内胚窦瘤诊断及病情监测的血清学标记物为() A.CA125 B.AFP C.h

题型:单项选择题 B1型题

问题:

常用于内胚窦瘤诊断及病情监测的血清学标记物为()

A.CA125

B.AFP

C.hCG

D.LDH

E.CA19-9

考点:肿瘤放射治疗学主治医师妇科肿瘤妇科肿瘤题库
题型:单项选择题 B1型题

现已确认,CO、SO2和NOx的排放是造成大气污染的重要原因。

(1)用CO2和氢气合成CH3OH具有重要意义,既可以解决环境问题,还可解决能源危机。已知CH3OH具有重要意义,既可以解决环境问题,还可解决能源危机。已知CH3OH、H2的燃烧热分别为—726.5kJ/mol、—285.8kJ/mol,写出工业上用CO2和H2合成CH3OH的热化学方程式:                       

(2)用铂作电极,一极通入空气,一极通入CH3OH(l),与KOH溶液可组成燃料电池,其负极反应式为              ___。溶液中的阴离子向            极定向移动。

(3)如图是一个电化学装置示意图,用CH3OH—空气燃料电池作此装置的电源。

①如果A为粗铜,B为纯铜,C为CuSO4溶液。该原理的工业生产意义是      

②如果A是铂电极,B是石墨电极,C是AgNO3溶液。通电后,

若B极增重10.8 g,该燃料电池理论上消耗____mol甲醇。(计算结果保留两位有效数字)

(4)常温下向1L、0.2 mol/L NaOH溶液中通入4.48 L(标准状况)的

SO2(忽略混合后溶液体积的变化),若测得溶液的pH<7,则溶液中c(SO32—)_  c(H2SO3)(填“>”、“<”、或“=”)。有关该溶液中离子浓度关系的判断正确的是         (填字母编号)。

A.c(SO32—)十c(OH)+c(HSO3)=c(Na+)+c(H+

B.c(H2SO3)+c(HSO3)+c(SO32—)=" 0.2" mol/L

C.c(H2SO3)+c(H+)=c(SO32—)十c(OH-

D.c(Na+)>c(H+)>c(HSO3)>c(OH

题型:单项选择题 B1型题

1940年法国()洞窑,发现了()壁画。

题型:单项选择题 B1型题

Geo, Ho and Io formed a partnership three years ago to run a business. They each provided capital to establish the business as follows:Geo $20,000;Ho $12,000; andIo $8,000.The partnership agreement stated that all profits and losses were to be divided in proportion to the capital contribution.After 18 months Geo provided the partnership with a loan of $3,000 in order to finance the purchase of more inventory. The loan was to be paid back from the profits of the business.Unfortunately the business was not successful and the partners decided to dissolve the partnership rather than risk running up any more losses. At the time of the dissolution of the partnership its assets were worth $20,000. Its external debts were $7,000 and none of the debt to Geo has ever been paid.Required:Advise the partners as to how the financial aspects of the dissolution will be conducted and how the assets will be distributed. (10 marks)

题型:单项选择题 B1型题

不属于中医学理念的是______。

A.头疼医头、脚痛医脚
B.自我协调、自趋稳态
C.天人和谐
D.身心合一

题型:单项选择题 B1型题

某肥皂厂从建厂以来一直专注于开发肥皂产品,因其质量卓越、价格公道而广受市场好评,有自己稳定的消费群体。为了扩大经营规模,企业决定增加洗衣粉的生产。根据市场预测,可知这种洗衣粉市场状况的概率是畅销为0.3,一般为0.5,畅销为0.2。洗衣粉产品生产采取大、中、小三种批量的生产方案。

该肥皂厂采取的决策方法为()。

A.风险型决策

B.确定型决策

C.不确定型决策

D.定性决策

更多题库