| Animal studies are under way, human
trial protocols are taking shape and drug makers are on alert. All the
international health community needs now is a human vaccine for the bird flu
pandemic sweeping a cluster of Asian countries. The race for a vaccine began after the first human case emerged in Hong Kong in 1997. Backed by the World Health Organization (WHO), three research teams in the US and UK are trying to create a seed virus for a new vaccine. Their task is formidable, but researchers remain optimistic." There are obstacles, but most of the obstacles have been treated sensibly," says Richard Webby, a virologist at St. Jude Children’s Research Hospital in Memphis, Tennessee. The biggest challenge is likely to be the rapidly mutating virus. Candidate vaccines produced last year against the H5N1 virus are ineffective against A. there is already a case in which the virus is transmitted from person to person. B. american scientists take the pandemic more seriously than European ones. C. the effect of candidate vaccines can last more than one year. D. the manufacture of the vaccine must be authorized by safety authorities. [判断题]全桥式、半桥式、推挽式功率转换电路中易于获得大的输出容量的电路有推挽式和全桥式。
A.正确 B.错误 [单选题]如何在排量固定的情况下提高功率( )
A. 增加喷油 B. 提前点火 C. 增加进气 [判断题]低压供电方案可由现场勘查人员提出，经客户服务中心审核后答复客户。
A.正确 B.错误 [单选题]无缝线路地段,当预测施工轨温高于原锁定轨温( )以上时,线路清筛前必须进行应力放散,放散轨温应满足施工期间作业安全要求。
A.5℃ B.10℃ C.15℃ D.20℃ [单选题]最厚的一种上皮是：（ ）
A.假复层纤毛柱状上皮 B.复层扁平上皮 C.复层柱状上皮 D.变移上皮 [单选题]谈话应当在具备安全保障条件的场所进行。由纪检监察机关谈话的,应当制作谈话笔录,谈话后( )由被谈话人写出书面说明。
A.应当 B.可以视情况 C.必须 D.无需 [单项选择]我方报价CIF 安特卫普 USD2000/MT 对方要求2%折扣，则折实售价为（ ）。
A. USD1960 B. USD1690 C. USD1069 D. USD40 [单项选择](76) Some people argue that the pressure on international sportsmen and sportswom-en kills the essence of sport-the pursuit of personal excellence. Children kick a football around for fun. When they get older and play for local school teams, they become competi-tive but they still enjoy playing. The individual representing his country cannot afford to think about enjoying himself, and he has to think only about winning. He is responsible for an entire nation’s hopes, dreams and reputation.
A good example is the football World Cup. Football is the world’s most important sport. Winning the World Cup is perhaps the summit of international sporting success. Mention "Argentina" to someone, and the chances are that he’ll think of football. In a sense, winning the World Cup "put Argentina on the map." Sports fans and supporters get quite irrational about the World Cup. People in Eng-land felt that their country was somehow important after they won in 1966. Last year thousands of A. fail to succeed B. be successful C. lose enjoyment D. be irrational [判断题]带电的电压互感器和电流互感器的二次回路均不允许开路。
A.正确 B.错误 [单选题]设备集中站的UPS输出连接至下一级设备为（）。
A.电源防雷箱 B.电源屏 C.电源屏与稳压柜 D.用电负载 [单选题]下列污染物中，其排放适用《大气污染物综合排放标准》的是（ ）。
A.水泥窑排放的氮氧化物 B.电镀工艺排放的铬酸雾 C.垃圾填埋场排放的氨气 D.火电厂输煤系统排放的粉尘 [判断题]两相触电时流过人体电流要比单极接触时轻得多，危险性也小得多。
A.正确 B.错误 [判断题]货物损失涉及车辆技术状态时，要通知车辆部门到现场对车辆做出检查记录。
[单选题]在基本的所需导航性能（RNP）仪表进近运行中，最后进近所应用的RNP值是：
A.RNP2 B.RNP1 C.RNP0.5 D.RNP0.3 [判断题]3.46.第46题
直埋电缆周围应选择较好的土层,电缆上、下部应有100mm的软土砂层。 A.正确 B.错误 [单项选择]既平肝潜阳，又清肝明目的药是（）
A. 珍珠 B. 蒺藜 C. 僵蚕 D. 珍珠母 E. 罗布麻叶 [单项选择]无功能腺瘤（）
A. 垂体嫌色性腺瘤、闭经、溢乳症 B. 垂体嫌色性腺瘤、临床无特殊表现 C. 垂体嫌色性腺瘤、垂体侏儒 D. 垂体嗜酸性腺瘤、巨人症 E. 垂体嗜碱性腺瘤、水盐代谢紊乱、肥胖 [多选题]消防控制室应能显示自动喷水灭火系统的（ ）等设备的正常监视状态和动作状态。
A.信号阀 B.报警阀 C.压力开关 D.水流指示器 [不定项选择题]A.脊柱后凸
A.脊柱前凸 B.脊柱生理性弯曲 C.姿势性侧凸 D.器质性侧凸 E.正常人的脊柱立位时从侧面观可见 [判断题]页面的背景可以填充渐变色、图片、图案或者纹理，但是页面背景不受节区域的限制。
A.正确 B.错误 [填空题]各级人民代表大会及其常务委员会按照法定的权限和程序，对有关机关制定的法律文件进行审查，以保证其符合（）的要求。
[多选题]井下各类涌水应经排水系统直接排至地面，非特殊情况严禁（），向（）或（）内排水
A.打循环水 B.采空区 C.废弃巷道 我来回答: 提交
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