一个电阻元件R，当I=-5V，u=2V，则该元件（）。A.吸收10W功率 B.放出1

患者女，27岁，因“全身疼痛2年余”来诊。近2年出现腰痛、足跟痛、肩背痛等，逐渐加重，伴下肢无力，活动受限，身高降低3cm。病程中有多饮、多尿，间断反酸、胃灼热。无肉眼血尿。查体：P90次/min，BP100/70mmHg；步入病房，皮肤干燥，甲状腺不大；胸廓挤压痛（＋）；心、肺、腹（－）；脊柱四肢无畸形，骨盆压痛（＋）；双下肢无水肿。

患者入院后应常规检查（）。

A.血常规

B.红细胞沉降率

C.血生化（电解质，肝、肾功能）

D.骨X线片

E.动脉血气分析

F.尿钙、磷

G.骨髓穿刺＋活检

公开招标采购流程中，在财政部门指定媒体公告信息的时间应为( )。

A．自招标文件发出至投标截止日不少于10日

B．自招标文件发出至投标截止日不少于15日

C．自招标文件发出至投标截止日不少于20日

D．自招标文件发出至投标截止日不少于25日

地毯的绒面结构主要有割绒和（）

A.圈绒

B.混纺

C.织花

D.编结

个人计算机中的数字声音有两种不同的表示方法：一种是 (53) ，它通过对实际声音的波形信号进行数字化(取样和量化)而获得，它能高保真地表示现实世界中任何客观存在的真实声音；另一种是使用符号对声音进行描述，然后通过合成的方法生成声音。用符号描述的乐器演奏的音乐声音 (54) 属于上述第二类声音，它所使用的音乐合成器有 (55) 。

A．FM

B．FM和波表

C．FM和复音

D．FM，波表和音轨

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."