燃机理想简单循环燃气轮机的循环效率只与（）有关，与（）无关。

（1）用离子方程式表示下列应用或现象

①小苏打与烧碱溶液的反应______

②稀硫酸与氢氧化钡的反应______

（2）根据下列离子方程式，各写一个符合条件的化学方程式

①Ag⁺+Cl^-=AgCl↓______

②CO₃^2─+2H⁺=CO₂↑+H₂O______．

在三种产品，合格率分别是0.90，0.95和0.95，各抽取一件进行检验．

（Ⅰ）求恰有一件不合格的概率；

（Ⅱ）求至少有两件不合格的概率．（精确到0.001）

下列疾病中一般不会造成胃舒缩不良的是()

A．慢性胃炎

B．胃多发性溃疡

C．胃周围粘连

D．早期胃癌(Ⅱc型)

E．早期胃癌(I型)

He was just 12 years old when he died. But he brought courage and hope to people around the world.

Nkosi Johnson, who died last June, is remembered today as an AIDS fighter. This young boy challenged his government’s AIDS policies and millions of South Africans in the fight against the disease.

Johnson was the longest survivor born HIV positive（艾滋病病毒携带者）.He survived with this deadly disease for 12 years before it claimed his life.

At first, Johnson was expected to live for nine months when his foster mother, Gail Johnson took him in at the age of two. She now runs Nkosi’s Haven across town from her house in Melville. The Haven is home to 20 children living with HIV or AIDS, and 11 of their mothers.

Johnson attracted the world’s attention and stole the hearts of thousands of people across the world at the 13^th International AIDS Conference in Durban in July 2000. He stood in front of a large audience including South African President Thabo Mbeki. He told them that he wanted AZT, a drug used to treat AIDS patients, to be given to HIV-positive pregnant（怀孕的） women to prevent the disease being passed on to their unborn babies. He received a loud cheer at the end of his speech.

Johnson’s speech was broadcast live across the world. With views beyond his age and even a sense of humor, Johnson soon became an international sign of the fight against AIDS and HIV.

小题1:The underlined words “claimed his life” (Paragraph 3) means _______.

A．did harm to Johnson’s life

B．helped Johnson to survive

C．caused the death of Johnson

D．made Johnson weak小题2:The main idea in paragraphs 5 and 6 is ________.

A     Johnson attracted the world’s attention

B．Johnson stood in front of South African President Thabo Mbeki

C．Johnson wanted AZT to treat AIDS pregnant women

D．Johnson helped prevent the disease being passed on to an unborn baby

小题3:The AIDS child gave the speech in order to _________.

A．steal the hearts of thousands of people

B．be an AIDS fighter

C．get more help from the world

D．fight against the government小题4:From the passage we can infer that _______.

A．the government’s AIDS policies have to be improved

B．the government did nothing to help those with HIV positive

C．the boy’s speech changed the government’s policies

D．no one lived longer than the boy小题5:The best title for this passage is        .

A．The Sad Story of an AIDS Child.

B．The Courage of an AIDS Child

C．AIDS, a Deadly Disease

D．A Hero in South Africa

安全生产监管监察部门及其行政执法人员在监督检查中发现生产经营单位存在事故隐患的，采取现场处理的措施表述不正确的是( )。

A．重大事故隐患排除过程中无法保证安全的，应当责令从危险区域撤出作业人员，并责令暂时停产停业、停止建设、停止施工或者停止使用，限期排除隐患
B．依法给予行政处罚
C．重大事故隐患排除前，应当责令从危险区域撤出作业人员，并责令暂时停产停业、停止建设、停止施工或者停止使用，限期排除隐患
D．能够立即排除的，应当责令立即排除