目前我国大学毕业生就业实行（）。A．供需见面双向选择的分配制度 B．指令性和指导性计

要想保证机构的安全，构件横截面上最大应力必须小于或等于材料的（）。

A、正应力

B、剪应力

C、许用应力

D、破坏应力

高背压泡沫产生器是从贮罐内底部液下喷射空气泡沫扑救油罐火灾的主要设备，其发泡倍数（）。

A．不应小于1倍，且不应大于2倍 

B．不应小于2倍，且不应大于4倍 

C．不应小于4倍，且不应大于8倍 

D．不应小于5倍，且不应大于10倍

阅读理解

     Burns can be caused by fire, the sun, chemicals, heated objects or fluids, and electricity. They can be

minor problems or life-threatening emergencies. Distinguishing a minor burn from a more serious burn

involves determining the degree of damage to the tissues of the body. If you are not sure how serious the

burn is, seek emergency medical help.

     First-degree burns are those in which only the outer layer of skin is burned. The skin is usually red and

some swelling (肿大) and pain may occur. Unless the burn involves large portions of the body, it can be

treated at home.

     Second-degree burns are those in which the first layer of skin has been burned through and the second

layer of skin is also burned. In these burns, the skin reddens intensely and blisters (水泡) develop. Severe

pain and swelling also occur. Second-degree burns require medical treatment.

     Third-degree burns are the most serious and involve all layers of skin. Fat, nerves, muscles, and even

bones may be affected. Areas may be charred black or appear a dry white. If nerve damage is substantial,

there may be no pain at all. These burns require emergency medical attention.

     Follow these steps when treating minor burns at home:

1) If the skin is not broken, run cool water over the burn for several minutes.

2) Cover the burn with a sterile (消过毒的) bandage or clean cloth.

3) Take aspirin to relieve any swelling or pain.     

    Seek emergency treatment immediately for major burns. Before an emergency unit arrives, follow these steps:

1) Remove the person from the source of the burn (fire, electrical current, etc.).

2) If the person is not breathing, begin mouth-to-mouth resuscitation (人工呼吸) immediately.

3) Remove all clothing to stop further burning. If the clothing is stuck to the burn, do not attempt to

    remove it.

4) Cover the burned area with a cool, moist, sterile bandage or clean cloth. Do not place any creams,

    ointments (药膏) or ice on the burned area or break blisters.

5) Monitor the patient for signs of shock, and treat accordingly.

1. The underlined sentence in the first paragraph probably means "_____".

A. They can be dangerous if you don't treat them seriously

B. They range from slight burns to deadly ones

C. They seldom cause deaths even if not treated properly

D. They usually cause deaths if not treated properly

2. Burns are divided into different degrees according to ______.

A. what kind of treatment they need

B. what kind of tissue of the body is damaged

C. whether there is pain and what degree of pain there is

D. which layer of skin is burned

3. From the passage we learn that _____.

A. if there is severe pain, then you need medical treatment

B. first-degree burns don't require medical treatment

C. burns without pains can be treated at home

D. the larger the swelling is, the more serious it is

4.  It can be inferred from the passage that _____.

A. you shouldn't cover the burn with a bandage or cloth if it is severe

B. you shouldn't move the person unless you know how to do first aid

C. you shouldn't run cool water over the burn if the skin is broken

D. you shouldn't place any wet towels on the burned area

5. where do you probably find the passage?

A.a fashion magazine    

B.a guide book

C.a book on first aid      

D.a section about culture in the newspaper

为了杜绝“干部出数字，数字出干部”的消极腐败现象，准确衡量各地各部门的工作业绩，海南省人大常委会讨论通过了《关于违反统计法律法规行为行政处分的暂行规定》，对虚报隐瞒统计数字者亮起红灯。
(1)这一规定确立的哲学依据是什么
(2)根据(1)的结论说明为什么要对“虚报隐瞒统计数字亮起红灯”。

在建设工程项目施工过程中，由于实际地质条件与勘察资料不符，而发生了设计变更，使基底换填增加了工程量，对于该新增工程量的综合单价，应( )作为结算的依据。

A．由设计单位提出，经发包人确认后

B．由承包人提出，经发包人确认后

C．由发包人提出，经承包人确认后

D．由监理工程师提出，经设计单位复核后