《山东省农业机械管理条例》所称农业机械,是指用于种植业、()、畜牧业、渔业、农副产品

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问题:

《山东省农业机械管理条例》所称农业机械,是指用于种植业、()、畜牧业、渔业、农副产品加工业的动力机械及其配套作业机械。

A.设施农业

B.林业

C.果业

D.养殖业

考点:农机安全监理竞赛农机安全监理竞赛题库
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食物中能给人的生命活动提供能量的营养物质有__________ 、_________ 和_________ 。

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A

Insomnia is the inability to fall asleep or sleep restfully. It is a problem to nearly everyone at some time .A person may be awake for an hour in the middle of the night and then , next morning, feel that he hardly sleep all night Normally, worry about not getting enough sleep is the worst aspect of most insomnia. If insomnia is recurrent, however, it is important to find its causes and try to correct them, with the help of a doctor if necessary.

Any of a large number of simple factors may take it difficult for someone to fall asleep or remain asleep. His matters may be too soft or too hard. If there are too many blankets on a hot night, he may be too warm; if the bedclothes are too light he may feel cold during the night. If it is not dark enough, or too noisy, this may cause difficulty in sleeping. Eating shortly before going to bed also be responsible for insomnia. Stimulating drinks, such as tea or coffee, can also keep people awake.

Inability to fall asleep is sometimes a symptom of emotional or mental disorders. Insomnia may also be caused by pain and, very rarely, it can be a symptom of a physical disease.

The cause of insomnia may be easy to correct. The sufferer should check the mattress, bedclothes and bedroom temperature, and make any necessary changes. An eye mask keeps out the night and ear-plugs shut out sound. He should relax for an hour or two before bedtime, perhaps by reading a book; watching TV, or taking a warm bath. If he wakes during the night he should try turning on the light and reading for a while. Taking warm milk and a biscuit or two may be helpful. Above all, he should try not to worry about sleeplessness when someone is tied enough he nearly always falls asleep.

If necessary, a doctor may prescribe tranquillizers or sleeping pills. Take only the dosage he prescribes; any more is dangerous.

1. According to the writer, insomnia is ______.

[ A ] a rare problem                 [ B ] a sign of illness

[ C ] a common complaint            [ D ] a modern disease

2. People who have difficulty sleeping should sleep in_____.

[ A ] a light room                   [ B ] a dark room

[ C ] a cold room                   [ D ] a warm room

3. Insomnia need’t be taken seriously because_______.

[ A ] people can catch on sleep during the day.

[ B ] many people sleep far too much.

[ C ]it can easily be cured by doctors.

[ D ]it is cured naturally by tiredness.

4. The main cure for insomnia is_____.

[ A ] not to read too much at night

[ B ]not to eat too much for supper

[ C ] not to watch too much television

[ D ] not to get too anxious about sleeping

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按照计算机的演变过程和发展趋势,通常把计算机分为()大类。

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在用闭口杯测定变压器油的闪点时,试油的水分大于()时必须脱水。

A.0.0001

B.0.0002

C.0.0005

D.0.001

题型:单项选择题

作为重要建筑材料的花岗岩和大理岩在成因上分属于()

A.岩浆岩和沉积岩

B.岩浆岩和变质岩

C.沉积岩和变质岩

D.变质岩和沉积岩

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