环境污染物在体内蓄积的程度与哪项因素有关（）。 A.进入途经、作用方式、作用时间

发布时间：2017-07-06 19:53 │ 来源：www.tikuol.com

题型：单项选择题 A1型题

问题：

环境污染物在体内蓄积的程度与哪项因素有关（）。

A.进入途经、作用方式、作用时间

B.进入途经、排出方式、作用时间

C.吸收量、生物半减期、作用时间

D.吸收量、排出方式、作用时间

E.吸收量、排出途经、排出量

考点：公卫执业助理医师 2009年公卫执业助理医师考试真题（A1型题1）

题型：单项选择题 A1型题

初产妇跨耻征阳性，临产后不会出现（）

A.病理缩复环

B.胎膜早破

C.胎头衔接

D.子宫收缩力异常

E.胎位异常

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题型：单项选择题 A1型题

关于人口合理容量的叙述，正确的是[ ]

A、人口合理容量就是指环境承载力

B、人口合理容量就是指某地区的环境所能容纳的最大人口数

C、人口合理容量是确定的，可定量估计

D、人口合理容量就是指某地区的环境所能容纳的最适宜人口数

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题型：单项选择题 A1型题

《城市住宅小区物业管理服务收费暂行办法》对城市住宅小区物业管理服务（），以及违反《城市住宅小区物业管理服务收费暂行办法》应当给予的行政处罚，都做了明确规定。

A.收费的主管机关

B.收费应当遵循的准则

C.收费价格形式

D.代办性质的服务收费管理

E.物业管理服务费用的构成

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题型：单项选择题 A1型题

阅读短文，从A-F中选出正确答案。

A. Causes of dental fluorosis
B. Negative effects of fluoride
C. Safe use of fluoride
D. The expert's background information
E. No need to worry about fluoride poisoning
F. Solutions to improper use of fluoride

    I have heard that fluoride can help stop dental decay, but I recently read that it is poisonous. Which of these
is true? How can children use fluoride safely?
     1.______
     This question is answered by Dr Marcia M. Rich who practises general dentistry in Newholt. She is also a
lecturer at the University and a writer for the monthly magazine Your Dentist Cares.
     2.______
     My answer to the first question is to stress that fluoride works well and is safe when users follow
instructions. Young children have a tendency to swallow toothpaste, which is why they should only have a tiny
amount of fluoride toothpaste on their toothbrush. If this simple measure is taken, parents can be confident that
children will be protected against tooth decay, and come to no harm.
     3.______
     Almost all medicines can have an adverse effect-or even be deadly-if they are not taken as directed. So you
are right-fluoride can be poisonous if it is swallowed in very large quantities. It is for this reason that fluoride
supplements can only be obtained on prescription from a doctor or a dentist. Please be assured that fluoride
overdoses are rare-in fact, I have never heard of any fatal incidents related to fluoride poisoning.
     4.______
     Scientific studies have shown that fluoride can help to prevent cavities as long as it is used correctly. If
fluoride is abused, there is a risk of illness or even death in extreme cases. If a deadly amount of fluoride is
taken, immediate first-aid could save a life. A person who has swallowed a large amount of fluoride will probably
start vomiting. lf not, the patient should be given milk or antacid and taken to the nearest hospital for emergency
treatment.
     5.______
     Taking too much fluoride while teeth are growing can lead to a condition called dental fluorosis. The most
likely cause is the swallowing of fluoride toothpastes by young children. It can also be caused by the
inappropriate use of fluoride drops or other fluoride supplements, for example when fluoride is already present
in drinking water.

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题型：单项选择题 A1型题

为保证企业不受洪水淹没，当企业设在江河湖岸附近时应使建(构)筑物地坪标高高于最高洪水水位( )米。

A．0.4
B．0.5
C．0.6
D．1.0

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