T℃时反应2SO2（g）+O2（g） 2SO3（g）过程中的能量变化如图所示，

我是人体内一个长得像小蝌蚪的细胞，我和上亿个同伴竞争，穿过重重阻碍终于在一个狭窄的管道里与卵细胞相遇并结合成一个新的细胞，我们开始分裂，产生更多的细胞，最终在一个宽敞的房子里住下来，开始发育……请回答：

⑴“我”指的是           ，产生“我”的器官是          。

⑵“狭窄的管道”指的是         ，结合成“新的细胞”的过程叫做             。

⑶“宽敞的房子”指的是母体的              。

⑷宝宝在发育过程中，通过       和           从母体获得营养物质和氧气。

西双版纳主要的气候类型是 [ ]

A．热带雨林气候

B．热带季风气候

C．亚热带季风气候

D．高山气候

患者最好的治疗手段为

A．甘露醇静推
B．呼吸兴奋药静点
C．气管插管
D．保持侧卧位
E．抗生素应用

Of all the employed workers in the United States, 12.5 million are part of a temporary workforce. The United States Bureau of Labor Statistics counts 9.2 percent of workers as those who have______(1) they term "alternative employment arrangements." The government predicts that temporary staffing agencies______(2) experience growth of 49 percent by 2010. If numbers increase at the rate ______ (3), these companies will add 1.9 million new jobs by 2010. That’’s more than any______(4) industry.Temporary workers were the first ones to be affected by the recent economic recession, but they are______(5) to be the first to regain positions as the economy picks up and companies work to rebuild. Employers use temporary workers as a resource because_______(6) offer flexibility and come at a low cost. Many temporaries are categorized as "independent contractors" instead of employees,______(7) allows the employer to avoid______(8) certain taxes. Because they are not required to offer benefits to temporary workers, companies can save a great deal of money by hiring temps. Usually, temporary workers can qualify_______(9) benefits if they work for a staffing company for a certain length of time. Most temps, however, do not continue with one company long______(10) to qualify for them because they regard the position as a step on the ladder to a______(11) position later.According to Richard Wahlquist, president of the American Staffing Association, 75_______(12) of temporary workers hope for transition out of the temporary staffing category______(13) a period of time. Wahlquist finds that temporary workers spend about 11 weeks on various assignments before their______(14) out of the temporary workforce. Many use temporary positions to gain experience and skills______(15) they move on to better jobs. Wahlquist says that the temp workforce as a whole turns______(16) 400 percent each year.Tom Dilworth, research director at the Employment Policies Institute, explains______(17) some workers like having temporary jobs______(18) it affords them a great deal of elasticity with time and everything. Some temps only have a limited______(19) of time to work and temp agencies can help coordinate jobs to fit their schedules. Other sometimes-employees use temporary jobs to get an______(20) to a company from the inside, to get a foot in the door of a certain business or career._______(21) others take temporary positions in hopes their employers will change them over to permanent positions eventually.Nearly all the industries in the United States use temporary workers.______(22) to Tim Costello, coordinator of the North American Alliance for Fair Employment, the growth of temporary labor threatens______(23) job security of permanent workers who fear replacement, as well as the temps who are more accustomed to turnover. He predicts that there will continue to______(24) a gradual shift from permanent employees to contingent staffing, and that such a_____(25) in workplace demographics will "lead to lower wages, poorer working conditions, and more instability."

在实际的项目开发中，人们总是希望使用自动工具来执行需求变更控制过程。下列描述中，（）不是这类工具所具有的功能。

A.可以定义变更请求的数据项以及变更请求生存期的状态转换图

B.记录每一种状态变更的数据，确认做出变更的人员

C.可以加强状态转换图使经授权的用户仅能做出所允许的状态变更

D.定义变更控制计划，并指导设计人员按照所制定的计划实施变更