问题 问答题

石灰砂浆如何充筋

答案

参考答案:石灰砂浆充筋具体方法是在上下两个相对应的灰饼间抹上一条宽10cm、略高灰饼的灰梗,用抹子稍压实,而后用大杠紧贴在灰梗上,上右下左或上左下右的错动直到刮至与上下灰饼一平。把灰梗两边用大杠切齐,然后用木抹子竖向搓平。如果刚抹完的灰梗吸水较慢时,要多抹出几条灰梗,待前边抹好的灰梗已吸水后,可从前开始向后逐条刮平、搓平。

问答题
阅读理解

阅读理解。

     Your body, which has close relations with the food you eat, is the most important thing you own,

so it needs proper treatment and proper nourishment (营养).The old saying "An apple a day keeps

the doctor away "is not as silly as some people think. The body needs fruit and vegetables because

they contain vitamin C. Many people take extra vitamins in pill form, believing that these will make

them healthy.

     But a good diet is made up of nourishing food and this gives all the vitamins you need. The body

doesn't need or use extra vitamins, so why waste money on them?

     In the modern western world, many people are too busy to bother about eating properly. They

throw anything into their stomachs, eating hurriedly and carelessly. The list of illnesses caused or

made worse by bad eating habits is frightening,

1."Your body has close relations with the food you eat."It really means that ______.

A. all kinds of food you eat can be made into your body

B. your body is made up of the food you eat

C. what you eat has great effect on your health

D. the more you eat, the fitter you will feel

2. The old saying referred to in the passage tells us that ______.

A. eating apples regularly does lots of good to our health

B. the apple is the best among all kinds of fruits

C. apples can take the place of doctors

D. an apple is a sure cure for illness

3. In the second paragraph, the writer tries to let us know ______.

A. our bodies need food or we can' t live

B. often eating apples is a good habit

C. taking extra vitamin pills is completely useless

D. a good diet is of great importance for our health

4. In the modern western countries ______.

A. people don't want to pay more attention to their eating

B. lots of people's illnesses are caused or made worse by bad eating habits

C. people throw everything into their stomachs without chewing

D. people are only too busy to cook meals for themselves