海水中含有丰富的镁资源.某同学设计了从模拟海水中制备Mg0的实验方案( ) 模

题型:选择题

问题:

海水中含有丰富的镁资源.某同学设计了从模拟海水中制备Mg0的实验方案(  )

模拟海水中的离子浓度(mol/L)Na+Mg2+Ca2+Cl-HCO3-
 0.439 0.050 0.011 0.560 0.001
Kap(CaCO2)=4.96×10-3Kap(MgCO2)=6.82×10-5Kap[Ca(OH)2]=4.68×10-4注:溶液中某离子的浓度小于1.0×10-5mo1/L,可认为该离子不存在:实验过程中,假设溶液体积不变.

已知:Kap[Mg(OH)4]=5.61×10-12 

下列说法正确的是(  )

A.沉淀物x为CaCO3

B.滤液M中存在Mg2+,不存在Ca2+

C.滤液N中存在Mg2+、Ca2+

D.步骤②中若改为加入4.2gNaOH固体,沉淀物Y为Ca(OH)2和Mg(OH)2的混合物

考点:沉淀溶解平衡海水资源的综合利用
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患者,女性,58岁,高热伴咳嗽咳痰、乏力1天,入院后予止咳化痰处理,肌内注射妥布霉素8万U,2次/天,3天后出现少尿,恶心呕吐,化验尿蛋白(+),红细胞8~10/HP,血红蛋白114g/L,血肌酐520μmol/L。

该患者若行肾病理检查其表现可能为()

A.免疫病理发现IgA沿毛细血管壁沉积

B.肾小管上皮细胞崩解坏死

C.肾间质白细胞浸润

D.肾间质水肿

E.肾间质血管非特异性炎症

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在发展中国家的金融自由化改革实践中,被视为成功范例的国家是()。

A、韩国

B、阿根廷

C、智利

D、新西兰

题型:选择题

阅读理解。

    People in the United States honor their parents with two special days: Mother's Day, on the second Sunday

in May, and Father's Day, on the third Sunday in June. These days are set aside to show love and respect for

parents. They raise their children and educate them to be responsible citizens. They give love and care. These

two days make us think about the changing roles of mothers and fathers. More mothers now work outside the

home. More fathers must help with child care. 

    These two special days are celebrated in many different ways. On Mother's Day people wear carnations

which have two colors. A red one symbolizes (象征) a living mother. A white one shows that the mother is

dead. Many people attend religious services to honor parents. It is also a day when people whose parents are

dead visit the cemetery. On these two days families get together to have parties at home, as well as in

restaurants. These are days of fun and good feelings and memories.

    Another tradition is to give cards and gifts. Children make them in school. Many people make their own

presents. These are valued (珍爱) more than the ones bought in stores. It is not the value of the gift that is

important, but it is "the thought that counts". Greeting card stores, florists, candy makers, bakeries, telephone

companies, and other stores do a lot of business during these holidays.

1. Which of the following is NOT a reason for children to show love and respect for parents? [ ]

A. Parents raise children.

B. Parents give love and care to children.

C. Parents educate children to be good persons.

D. Parents die before children grow up.

2. What do you think "florists" do? [ ]

A. They sell flowers.

B. They make and sell cards.

C. They offer enough room for having family parties.

D. They offer telephones to be used.

3. Which do you think is right about "carnation"? [ ]

A. It has only two kinds of colors.

B. It refers to the special clothes people wear on Mother's Day or Father's Day.

C. It's a kind of flower showing love and best wishes.

D. People can wear carnations only on the second Sunday in May.

4. What do you know from the passage? [ ]

A. Mother's Day and Father's Day are both in May.

B. Fewer mothers worked outside the home in the past.

C. Not all the children respect their parents.

D. Fathers are not as important as mothers at home.

5. On Mother's Day and Father's Day _____. [ ]

A. people usually have family parties

B. everyone goes to visit the park

C. children always go to parents' home

D. children often buy many valuable presents to their parents

题型:选择题

如果通过监盘发现被审计单位存货账面记录与经监盘确认的存货发生重大差异,注册会计师采用的程序可能无效的是( )。

A.对存货进行分析程序,确认差异的真实性

B.提请被审计单位对已确认的差异进行调整

C.进一步执行审计程序,查明差异原因

D.如果被审计单位不采纳注册会计师的调整意见,应根据其重要程序确定是否在审计报告中予以反映

题型:选择题

有关下列贫血的叙述正确的是()

A.贫血是血液系统疾病特有的表现

B.范可尼贫血是因为红细胞破坏过多所致

C.巨幼细胞贫血有"核老浆幼"现象

D.行军性血红蛋白尿是由于机械性因素造成红细胞破坏

E.遗传性球形细胞增多症是因为珠蛋白合成障碍

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