粒细胞输注，应用时要同时具备几个条件（）

[单选题]Passage2Can electricity cause cancer？In a society that literally runs on electric power，the very idea seems preposterous.But for more than a decade，a growing band of scientists and journalists has pointed to studies that seem to link exposure to electromagnetic fields with increased risk of leukemia and other malignancies.The implications are unsettling，to say the least，since everyone comes into contact with such fields，which are generated by everything electrical，from power lines and antennas to personal computers and micro-wave ovens. Because evidence on the subject is inconclusive and often contradictory，it has been hard to decide whether concern about the health effects of electricity is legitimate-or the worst kind of paranoia.Now the alarmists have gained some qualified support from the U.S.Environmental Protection Agency. In the executive summary of a new scientific review，released in draft form late last week，the EPA has put forward what amounts to the most serious government warning to date.The agency tentatively concludes that scientific evidence"suggests a casual link”between extremely low-frequency electromagnetic fields-those having very long wave-lengths-and leukemia，lymphoma and brain cancer，While the report falls short of classifying ELF fields as probable carcinogens，it does identify the common 60-hertz magnetic field as"a possible，but not proven，cause of cancer in humans.”The report is no reason to panic-or even to lost sleep.If there is a cancer risk，it is a small one.The evidence is still so controversial that the draft stirred a great deal of debate within the Administration，and the EPA released it over strong objections from the Pentagon and the White House.But now no one can deny that the issue must be taken seriously and that much more research is needed.At the heart of the debate is a simple and well-understood physical phenomenon: When an electric current passes through a wire, it generates an electromagnetic field that exerts forces on surrounding objects. For many years, scientists dismissed any suggestion that such forces might be harmful, primarily because they are so extraordinarily weak. The ELF magnetic field generated by a video terminal measures only a few milligauss, or about one-hundredth the strength of the earth' sown magnetic field, the electric fields surrounding a power line can be as high as 10 kilovolts permeter, but the corresponding field induced in human cells will be only about 1 millivolt per meter. This is far less than the electric fields that the cells themselves generate.How could such minuscule forces pose a health danger? The consensus used to be that they could not, and for decades, scientists concentrated on more powerful kinds of radiation, like X-rays, that pack sufficient wallop to knock electrons out of the molecules that make up the human body. Such"ionizing"radiations have been clearly linked to increased cancer risks and there are regulations to control emissions.But epidemiological studies, which find statistical associations between sets of data, do not prove cause and effect. Though there is a body of laboratory work showing that exposure to ELF  fields can have biological effects on animal tissues,a mechanism by which those effects could lead to cancerous growths has never been found.The Pentagon is far from persuaded. In a blistering 33-page critique of the EPA report, Air Force scientists charge its authors with having "biased the entire document"toward proving a link. "Our reviewers are convinced that there is no suggestion that(electromagnetic fields) present in the environment induce or promote cancer,"the Air Force concludes."It is astonishing that the EPA would lend its imprimatur on this report."Then Pentagon's concern is understandable. There is hardly a unit of the modern military that does not depend on the heavy use of some kind of electronic equipment, from huge ground-based radar towers to the defense systems built into every warship and plane.The main idea of this passage is______.

[单选题]灵芝的干燥方法为（）

[单选题]医疗法律关系（　　）。

[名词解释题]政府企业化

[单选题]《机关、团体、企业、事业单位消防安全管理规定》（公安部令第61号）规定，公众聚集场所对员工的消防安全培训应当至少每（）进行一次。

[单选题]整组道岔在线上做铺设前的纵、横向移动时，应合理布置移动轮和滑行轨道，应由（）统一指挥，平稳移动。

[单选题]（）“一丈青扈三娘”中的“一丈青”也是指一种发簪，《红楼梦》中提到哪个丫环也使用过“一丈青”？

[单选题]肝癌最早的转移途径是（）

[问答题]送电时，先合断路器哪一侧隔离开关？为什么？

[单选题]甲公司2016年1月采用经营租赁方式租入一条生产线，租赁期为3年。每年租金为50万元，于每年年末支付。2017年12月，市政规划要求甲公司迁址，甲公司决定停止生产该产品。原经营租赁合同不可撤销，还要持续1年，因生产线无法转租，若撤销合同，需支付违约金40万元。则2017年12月31日甲公司因该事项应确认的预计负债金额为（）万元。