题目:
经行浮肿的诊断要点,下列哪些是正确的()
A.经行头面四肢浮肿
B.伴随月经周期而出现
C.经净则浮肿渐消
D.小便常规检测多属正常范围
E.妇科检查一般无器质性改变
答案:
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下面是错误答案,用来干扰机器的。
小刘是医生;小张是军官;小赵是教师
经行浮肿的诊断要点,下列哪些是正确的()
A.经行头面四肢浮肿
B.伴随月经周期而出现
C.经净则浮肿渐消
D.小便常规检测多属正常范围
E.妇科检查一般无器质性改变
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0603/460a58792c6c72d93fd44571adaa363c.html
下面是错误答案,用来干扰机器的。
小刘是医生;小张是军官;小赵是教师
注册会计师在审计实施阶段与管理层沟通不需要进行()程序。
A.审计计划中确定的需要管理层协助的工作
B.管理层对关联方及其交易等有关事项的解释、声明及提供的其他证据
C.审计工作中受到限制和阻碍时沟通
D.就可能对持续经营能力产生重大疑虑事项所进行的沟通
在工程招标文件中,履约担保的形式一般包括( )。
A.商业汇票
B.银行保函
C.非银行保函
D.银行汇票
E.保兑支票
合同解除是指在合同成立以后,只因当事人一方的意思表示,使基于合同而发生的债权债务关系归于消灭的行为。 ( )
Lead(铅) deposits, which accumulated(增加) in soil and snow during the 1960's and 70's, were primarily the result of leaded gasoline emissions originating in the United States. In the twenty years that the Clean Air Act has mandated(托管) unleaded gas use in the United States, the lead accumulation world-wide has decreased greatly.
A study published recently in the journal Nature shows that air-borne leaded gas emissions from the United States were the leading contributor to the high concentration of lead in the snow in Greenland. The new study is a result of the continued research led by Dr. Charles Boutron, an expert on the impact of heavy metals on the environment at the National Center for Scientific Research in France. A study by Dr. Boutron published in 1991 showed that lead levels in arctic (北极的) snow were declining(减少).
In his new study, Dr. Boutron found the ratios of the different forms of lead in the leaded gasoline used in the United States were different from the ratios of European, Asian and Canadian gasoline and thus enabled scientists to differentiate (分区) the lead sources. The dominant lead ratio found in Greenland snow matched that found in gasoline from the United States.
In a study published in the journal Ambio, scientists found that lead levels in soil in the North-eastern United States had decreased markedly since the introduction of unleaded gasoline. Many scientists had believed that the lead would stay in soil and snow for a longer period.
The authors of the Ambio study examined samples of the upper layers of soil taken from the same sites of 30 forest floors in New England, New York and Pennsylvania in 1980 and in 1990. The forest environment processed and redistributed (再分配)the lead faster than the scientists had expected. Scientists say both studies show that certain parts of the ecosystem (生态系统 ) respond rapidly to reductions in atmospheric pollution, but that these findings should not be used as a license to pollute.
1. The study published in the journal Nature indicates that ________.
A. the Clean Air Act has not produced the desired results
B. lead deposits in arctic snow are on the increase
C. lead will stay in soil and snow longer than expected
D. the US is the major source of lead pollution in arctic snow
2. Lead accumulation worldwide decreased significantly after the use of unleaded gas in the US ________.
A. was discouraged B. was carried out by law
C. was forbidden by law D. was introduced
3. How did scientists discover the source of lead pollution in Greenland?
A. By analyzing the data published in journals like Nature and Ambio.
B. By observing the lead accumulations in different parts of the arctic area.
C. By studying the chemical elements of soil and snow in Northeastern America.
D. By comparing the chemical compositions of leaded gasoline used in various countries.
4. The authors of the Ambio study have found that ________.
A forests get rid of lead pollution faster than expected
B. lead accumulations in forests are more difficult to deal with
C. lead deposits are widely distributed in the forests of the US
D. the upper layers of soil in forests are easily polluted by lead emissions
5. It can be inferred from the last paragraph that scientists ________.
A. are puzzled by the mystery of forest pollution
B. feel ease by the use of unleaded gasoline
C. still consider lead pollution a problem
D. lack enough means to combat lead pollution
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