下列不属于水蒸气蒸馏法的是[ ] A．水中蒸馏 B．水上蒸馏 C．水气蒸馏 D．

西方国家1万例麻醉期间死亡的原因中，完全由麻醉引起的约（）

A.1～2例

B.3～4例

C.5～6例

D.7～8例

E.9～10例

Boyden小室法常用于测定

A．白细胞吞噬功能
B．中性粒细胞趋化功能
C．白细胞杀伤功能
D．淋巴细胞抑制功能
E．白细胞调理功能

当提升系统的惯性力高于系统的静阻力时，投入电气制动或机械制动的减速方式称为（）。

A.负力减速

B.正力减速

C.机械制动

D.电气制动

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."

2014年10月17日，天津市国土房管局、市建委等六部门发文对房地产市场调控政策进行调整，未来天津将不再查询家庭拥有住房情况，非天津市户籍购房者也取消提交社保、个人所得税证明等限制正式取消限购政策。这意味着该市正式取消楼市“限购令”，立即引起社会各界的关注。这一政策对该市市场影响的传导路径是（）

A.取消限购—需求增加—楼市回暖—市场稳定

B.取消限购—楼市回暖—需求减少—调节失灵

C.取消限购—供给增加—房价下降—市场稳定

D.取消限购—需求增加—供不应求—调节失灵