国标规定,测定食品中总砷的方法-硼氢化物还原比色法,为了将五价砷还原为三价砷,需使用

题型:单项选择题 A1/A2型题

问题:

国标规定,测定食品中总砷的方法-硼氢化物还原比色法,为了将五价砷还原为三价砷,需使用()。

A.锌与碘化钾

B.碘化钾与硫脲

C.硫脲与锌

D.碘化钾与氯化亚锡

E.锌与氯化亚锡

考点:理化检验技术(师)专业知识专业知识题库
题型:单项选择题 A1/A2型题

Today is Sunday. Our class meets at seven thirty a.m. at the school gate. We take a bus to Haian Park. The price(价格)of the ticket(票) for each adult(成人) is eighteen yuan, but for each student is half. The park is open from 8 a.m. to 5 p.m. First we play games in the park. And then we have dinner at noon. After that we sit and chat under the trees. At half past three, we go to the Swimming Club. We come back home at about six o’clock in the afternoon because(因为) it is time for all of us to have supper. We are tired(累) but we are very happy.

小题1:We meet ___________

A.at the school gate.

B.in the park

C.in the bus

D.in the Swimming Club小题2:The price of the ticket for each student is _________yuan.

A.nineteen

B.thirty—six

C.nine

D.eighteen小题3:The park is open for _______hours a day.

A.eight

B.nine

C.ten

D.eleven小题4:After dinner we sit and chat________

A.at home

B.near the club

C.on the sofa

D.under the trees小题5:Why do the students go home at about six p.m.?

A.Because they are happy

B.Because they are tired

C.Because they go home for supper

D.Because they have some homework to do

题型:单项选择题 A1/A2型题

男性,15岁,突发全身浮肿半个月。查体:BP120/70mmHg,眼睑和双下肢凹陷性水肿,尿蛋白(+++),BLD(-),24小时尿蛋白定量6.8g,血清白蛋白20g/L,BUN10.7mmol/L,Cr125μmol/L,首选的治疗方法是()

A.强的松40~60mg/d,8~12周后逐渐减量

B.强的松40~60mg/d,4周后无效加用免疫抑制剂

C.甲基强的松龙500mg/d,冲击3天

D.ACEI+ARB

E.CTX0.2g,qod,iv

题型:单项选择题 A1/A2型题

幕上血肿,一般血肿量超过多少即可产生症状,而需手术处理()

A.5ml

B.30ml

C.20ml

D.10ml

E.40ml

题型:单项选择题 A1/A2型题

折旧率随着使用年限的变化而变化的固定资产折旧计算方法是()。

A.平均年限法

B.双倍余额递减法

C.年数总和法

D.工作量法

题型:单项选择题 A1/A2型题

案件责任,是指发生案件的银行业金融机构及其上级机构的()在所发生案件当中应负的主要领导责任、重要领导责任和直接责任。

A.直接责任人

B.作案嫌疑人

C.分管负责人

D.主要负责人

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