试述切削过程的三个阶段

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问题:

试述切削过程的三个阶段

考点:机械工程机械知识机械知识题库
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阅读理解。

     There are four seasons in a year in China. Spring comes in February. May, June and July make the

summer season. August, September and October make the autumn season. November, December and

January make the winter season. In different seasons people wear different clothes and do different things.

For example the weather is hot, so people usually wear cool clothes and do things like swimming, boating

or surfing.

     Near the North Pole (北极) there are only two seasons. They are winter and summer. In winter,

nights are long. For more than two months you can't see the sun, even at noon. In summer the days are

long. For more than two months the sun never goes down and there is no night.

     The people living near the North Pole are called Inuit (因纽特人). In summer they live in tents and

catch deers (鹿) for food. In winter they live in small round snow houses. They can build a snow house

in two hours. They travel around by using dogs to carry their things. They make holes in the ice and

catch fish and seals (海豹). They eat much meat but not many vegetables.

1. The two seasons near the North Pole are _____. [ ]

A. spring and autumn

B. summer and winter

C. rainy season and dry season

D. spring and winter

2. You can't see the sun for _____ in North Pole in a year.[ ]

A. a season

B. a year

C. more than two months

D. half a year

3. Autumn in China _____.[ ]

A. is cold

B. lasts from August to October

C. hot

D. come after spring

4. Near the North Pole _____ in summer. [ ]

A. the days aren't long

B. the nights are long

C. there's no night for more than two months

D. 24-hour days last two months

5. The people in the North Pole eat much _____. [ ]

A. vegetables

B. meat

C. milk

D. bread

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肾上腺素的适应证不包括()

A.咳嗽

B.治疗药物过敏反应

C.治疗心源性哮喘

D.延长局麻药作用

E.止表面黏膜出血

题型:问答题 简答题

C型和D型肉毒核菌素防治草原害鼠的优点是()。

A.鼠类适口性好

B.毒力适中

C.对人畜比较安全

D.不易产生二次中毒

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证券公司从事介绍业务,应当与期货公司签订书面委托协议。委托协议所载明的下列事项中符合规定的是()。

A.介绍业务的范围

B.执行期货保证金安全存管制度的措施

C.报酬支付及相关费用的分担方式

D.为客户提供融资的利率约定

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