现在被冶金矿山普遍采用的平巷断面为()。A、拱形 B、梯形 C、矩形 D、三角形

题型:单项选择题

问题:

现在被冶金矿山普遍采用的平巷断面为()。

A、拱形

B、梯形

C、矩形

D、三角形

考点:采矿工程师露天采矿露天开采露天采矿露天开采题库
题型:单项选择题

根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项多余选项。

________小题1:_______________: less red meat and more fibre, less saturated fat(饱和脂肪) and more fruit and veg, right? Wrong, according to a controversial new book by nutritionist Zoe Harcombe.In the book, Harcombe charts her careful journey of research into studies that underpin (巩固)dietary advice — and her myth(误区)-breaking conclusions are surprising.                                

Myth: ________小题2:_________.

‘Real fat is not bad for us,’ says ¬Harcombe. ‘It’s man-made fats we should be demonising. Why do we have this idea that meat is full of saturated fat? In a 100g pork chop, there is 2.3g of unsaturated fat and 1.5g of saturated fat.

Myth: We should eat more fibre.

For three decades, we have eaten fibre into our bodies to help us feel full and keep our digestive systems moving. ______小题3:________, says Harcombe.

The advice to eat more fibre is put forward along with the theory that we need to clean our ¬digestive systems. But essential minerals are absorbed from food while it is in the intestines(肠道), so why do we want to wash everything out? Concentrate on not putting bad foods in.

Myth: You need to eat five portions of fruit and veg a day.

‘Five-a-day is the most well-known piece of nutritional advice,’ says ¬Harcombe. ‘You’d think it was based on firm evidence of health benefit. _______小题4:_______

‘Five-a-day started as a marketing campaign by 25 fruit and veg companies and the American National Cancer Institute in 1991. There was no evidence for any cancer benefit.’

Myth: Fruit and veg are the most nutritious things to eat.

Apparently not. Harcombe allows that vegetables are a great addition to the diet — if served in butter to deliver the fat-soluble(dissolved) vitamins they contain — but ¬natural sugar, the fruit sugar in fruit, goes straight to the liver and is stored as fat.

__________小题5:____________, says Harcombe, who adds: ‘Vitamins and minerals in animal foods — meat, fish, eggs and dairy products — beat those in fruit hands down.’

A.want to lose weight ? Don’t trust these.

B.We think we know what to eat.

C.This is not a good idea.

D.Fat is bad for usE. Think again

F. We need take more exercise

G. Fruit is best avoided by those trying to lose weight

题型:单项选择题

—Do you know? —_____ .[ ]

A. I like it    

B. I get it    

C. I finish it    

D. thank you

题型:单项选择题

患者因头痛、头晕20天,加重伴烦躁、频繁呕吐1天入院。入院体检:生命体征不平稳。头部MRI显示第四脑室肿瘤伴幕上脑室扩大。

患者可能发生的脑疝是()

A.脑中心疝

B.小脑幕切迹疝

C.小脑幕切迹上疝

D.枕骨大孔疝

E.大脑镰疝

题型:单项选择题

在以下的标准中,通常不用()来划分企业的竞争范围。

A.地理范围

B.横向范围

C.部门范围

D.纵向范围

题型:单项选择题

中心投影也能准确反映物体的真实形状和大小。( )

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