比较同一组儿童身高和体重两项指标的变异程度的大小,可选用的变异指标为()。 A.全距

题型:单项选择题 A型题

问题:

比较同一组儿童身高和体重两项指标的变异程度的大小,可选用的变异指标为()。

A.全距

B.标准差

C.变异系数

D.四分位数间距

E.方差

考点:医技考试病案信息技术士病案信息技术士专业知识模拟试题一
题型:单项选择题 A型题

阅读下面短文,按要求完成各项任务。

                                                       Breaking Bad Eating-Habits

     Have you heard the expression "You are what you eat"? Well, do you like who you are" If not, break

some bad eating habits and feel better about yourself.

     Bad habit 1: ______________

     Many packaged (= in small bags) foods, such as frozen (纤维) dumplings, rice rolls and instant noodles

(方便面) have lots of fat and calories (热量).

     The solution: Read the instructions to find the healthiest foods that are low in salt and nigh in fiber. Also

check to make sure they have ingredients such as vegetables and grains When possible, use packaged foods

as part of a "home-cooked" meal. For example frozen (纤维) dumplings with fresh vegetables are better than

dumplings alone.

     Bad habit 2: ______________ 

     People without breakfast don't have enough energy they need to get through the morning. Eating breakfast

improves your concentration, memory (冰冻的) and mood.

     The solution: Always keep a kind of quick foods like yogurt. Or have a standing order a breakfast place.

     Bad habit 3: ______________ 

     It takes your body at least 20 minutes to "tell" your brain that you are full. So last eaters usually eat more

than people who eat slowly.

     The solution: Try to slow down. Try eating at least some of your meals without IV, hand phones or

computers. Use a plate or bowl when you eat.

     Bad habit 4: ______________ 

     Healthy snacks between meals are fine. But when you snack instead of having real meals, you will not eat

your meals regularly. Plus, snack foods such as chips and sweets aren't very satisfying. That makes it easy to

overeat.

     The solution: To get more energy, allow yourself two healthy snacks a day. Choose snacks that will make

you feel full. Try fruit, yogurt or nuts.

    As we all know, bad habits can be broken. Take the first step toward a healthier eating routine (常规)-star f

ollowing these tips today!

1. 给文中的横线处选择合适的标题,并将其字母代号填写在下面的横线上。

    a. You are a fast eater.

    b. You often don't eat breakfast.

    c. All your meals come in packages.

    d. You snack too much.

    Bad habit 1:_______ Bad habit 2:_______ Bad habit 3:_______ Bad habit 4:_______

2. 列举出文中提到的三种packaged foods:

    _______________ _______________ ________________

3. 根据上下文,将文中划线句子译成汉语。

     It takes your baby at least 20 minutes to "tell" your brain that you are full. 

     ______________________________________________________________________

4. 根据文章内容完成句子。

     No eating breakfast is bad influence on your _______, _______, _______ and _______.

5. 回答问题。

    How can you eat snacks healthily? (至少答出两种方式)

    ________________________________________________________________________

    ________________________________________________________________________

6. 从文中找出与所给句子意思相同或相近的句子。

    Your health depends on the food you eat.

    ________________________________________________________________________

题型:单项选择题 A型题

给水管道的材料选用应根据()确定。

A.水质的要求

B.排放标准

C.泄水能力

D.建筑物的性质

题型:单项选择题 A型题

检测电控汽车电子元件要使用数字式万用表,这是因为数字式万用表()

A、具有高阻抗

B、具有低阻抗

C、测量精确

题型:单项选择题 A型题

97年2月,某旅行社接待香港某旅行团。年月某旅行社接待香港某旅行团。按照旅游合同约定,该旅行团在北京游览四天,按照旅游合同约定,该旅行团在北京游览四天,2月11日游览长城、2月12日游览颐和园、2月日游览长城、月日游览颐和园日游览颐和园、月月日游览长城14日参观市容后乘机离境。该旅行社导游人员日参观市容后乘机离境。

日参观市容后乘机离境××未征得该旅行团的同意未征得该旅行团的同意,××未征得该旅行团的同意,擅自对旅行团日程作了变更,将游览长城的日期改为2月14日。程作了变更,将游览长城的日期改为月日该旅行团曾对此变更提出质疑,××未作任何该旅行团曾对此变更提出质疑,××未作任何解释。月日北京下了一场大雪。月日解释。2月13日,北京下了一场大雪。2月14日清晨,旅行团车到八达岭脚下,清晨,旅行团车到八达岭脚下,由于积雪封路无法前行,该团只得返回。翌日,无法前行,该团只得返回。翌日,该团离境返港后向旅游投诉中心投诉。港后向旅游投诉中心投诉。

题型:单项选择题 A型题

下面哪个不是返品处理的评价指标是()

A.返品率

B.客户投诉率

C.客户流失率

D.配送及时率

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