在建设新农村过程中,生态厕所已成为一道独特风景。它的主要特点是 A．地下设有沼气

In the second half of each year, many powerful storms are born in the tropical Atlantic and Caribbean seas. Of (91) , only about half a dozen (92) the p, circling winds of 75 miles per hour or more that give them hurricane status, and several usually (93) their way to the coast. There cause millions of dollars of (94) , and bring death to (95) numbers of people.
The great storms that hit the coast start (96) innocent circling disturbances hundreds, even thousands of miles out to sea. As they travel aimlessly over water (97) by the summer sun, they are carried westward by the (98) winds. When conditions are just (99) , warm, moist air flows in (100) the bottom of such a disturbance, moves upward through it and comes out at the top. In the (101) , the moisture in this warm air produces rain, and with it the heat is converted to energy in the form of p winds. As the heat increases, the (102) hurricane begins to swirl in a counter-clockwise motion.
The average life of a hurricane is only about nine days, but it contains almost (103) power than we can imagine. The energy in the heat released by a hurricane’s rainfall in a(n) (104) day would (105) the entire electrical needs of the United States for more than six months. Water, not wind, is the main (106) of death and destruction in a hurricane. A(n) (107) hurricane brings 6-to 12-inch downpours (108) in sudden floods. (109) is the powerful movement of the sea-the mountains of water moving toward the low-pressure hurricane center. The water level (110) as much as 15 feet above normal as it moves toward shore.

A．origins

B．source

C．origin

D．production

超音速飞机在平流层飞行时，尾气中的NO会破坏臭氧层．科学家正在研究利用催化技术将尾气中的NO和CO转变成CO₂和N₂，其反应为：2NO（g）+2CO（g）

催化剂

2CO₂（g）+N₂（g）．

为了测定在某种催化剂作用下的反应速率，在某温度下用气体传感器测得密闭容器中不同时间的NO和CO浓度如表：

时间（s）	0	1	2	3	4	5
c（NO） （mol/L）	1.00×10-3	4.50×10-4	2.50×10-4	1.50×10-4	1.00×10-4	1.00×10-4
c（CO） （mol/L）	3.60×10-3	3.05×10-3	2.85×10-3	2.75×10-3	2.70×10-3	2.70×10-3

请回答下列问题（均不考虑温度变化对催化剂催化效率的影响）：

（1）在上述条件下反应能够自发进行，则反应的△H______0（填写“＞”、“＜”、“=”）．

（2）该反应的化学平衡常数表达式为K=______．

（3）前2s内的平均反应速率v（N₂）=______．

（4）能判断该反应是否达到化学平衡状态的依据是______（多选扣分）．

a．容器中压强不变             b．混合气体中 c（CO）不变

c．υ_正（N₂）=υ_逆（CO）       d．c（CO₂）=c（CO）

（5）该温度下达到平衡时CO的转化率是______．

某县城一生产企业为增值税一般纳税人。本期进口原材料一批，向海关缴纳进口环节增值税10万元；本期在国内销售甲产品缴纳增值税30万元、消费税50万元，由于缴纳消费税时超过纳税期限10天，被罚滞纳金1万元；本期出口乙产品一批(实行免、抵、退)，按规定退回增值税5万元。该企业本期应缴纳城建税( )万元。

A．4.55万元

B．4万元

C．4.25万元

D．5.6万元

现场预应力张拉记录填写要求包括( )。

A．锚夹具、预应力筋质量证明

B．施工方案或技术交底

C．张拉记录、张拉设备检定记录

D．预检记录、钢筋隐检记录、应力检测和质量检验评定资料

E．先张法张拉前混凝土的强度试验报告

习 * * * * 在十八届中 * * 政治局第二次集体学习时，强调“改革仍需摸着石头过河”。这是因为（）

A.实践具有社会历史性

B.实践是认识的重要来源

C.改革是认识的来源

D.实践是认识的基础