分配阀的副阀不包括工作风缸充气止回阀。（）

[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 view-point of the EPA is_______.

[单选题]一老年妇女遭车祸，左下肢粉碎性骨折，失血过多，经抢救无效死亡。尸检，肾脏和脑有多处脂肪栓塞，其栓子运行的途径是（）。

[单选题]男性，69岁。头痛、头晕、右半身麻木无力2个月入院。4年前发现血压高，服药可降至正常。体检：神志清，血压正常。眼底视盘边缘模糊不清右面部感觉减退，双眼展神经轻度麻痹，右口角力弱，右侧肢体不全瘫，右侧病理反射阳性。胸片右肺第2肋间可见阴影。本例患者考虑有（）

[单选题]下列哪一个服务接口类是关于业务应用管理方面的（）

[单选题]唐代，以法规形式，将“关”明定为平行公文文种，用于诸司之间自相（）。

[多选题]元认知监控包括（）、（）、（）、（）等具体环节。

[单选题]下列关于还原糖的表述中，正确的是（　　）。

[单选题]下列何为四环类抗抑郁剂（）

[判断题]破碎或粉磨较小的物料时，消耗的能量就较小。

[问答题]说明蒸汽雾化燃烧器的工作过程。

[判断题]分配阀的副阀不包括工作风缸充气止回阀。（）

[判断题]分配阀的副阀不包括工作风缸充气止回阀。（）

[单选题]分配阀副阀部由转换盖板、局减止回阀、一次缓解逆流止回阀、（）、充气阀和付阀组成。

[单选题]分配阀副阀部由转换盖板、局减止回阀、一次缓解逆流止回阀、（）、充气阀和付阀组成。

[填空题]F-7型分配阀的副阀部由副阀、充气阀、保持阀、局减止回阀、一次缓解逆流止回阀和（）等部件组成。

[填空题]F-7型分配阀的副阀部由副阀、充气阀、保持阀、局减止回阀、一次缓解逆流止回阀和（）等部件组成。

[多选题]F-7型分配阀的副阀部由（）、局减止回阀、转换盖板等部件组成。

[多选题]F-7型分配阀的副阀部由（）、局减止回阀、转换盖板等部件组成。

[单选题]JZ-7型空气制动机分配阀的工作风缸充气止回阀，控制（）向工作风缸单向充气。

[单选题]JZ-7型空气制动机分配阀的工作风缸充气止回阀，控制（）向工作风缸单向充气。