叶面积=叶长(cm)×叶宽(cm)×()(系数)。

题型:填空题

问题:

叶面积=叶长(cm)×叶宽(cm)×()(系数)。

考点:农学茶树栽培学茶树栽培学题库
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十二指肠溃疡病人上腹部疼痛的典型节律是()

A.疼痛-进食-缓解

B.进食-缓解-疼痛

C.缓解-疼痛-进食

D.进食-疼痛-缓解

E.疼痛-进食-疼痛

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Ⅳ、阅读理解(每小题2分; 满分30分)

Beijing’s markets will soon be flooded with more and cheaper colorful fruit such as orange mangos and green durian all year around.

Thanks to a new free trade agreement signed last Monday between China and the Association of Southeast Asia Nations(ASEAN), more and more tropical(热带的)South-east Asian fruit will enter the country.

The agreement means that from July 1, 2010, China and ASEAN countries will begin to cut tariffs(关税). There are about 7,000 products included in the cuts.

As global communication develops, countries are trading more and more goods with each other. When products are sold across national boundaries(边界),countries put a tax on them. This type of tax is called a tariff.

Just like removing an obstacle(障碍)from the path of these goods, the reduction of tariffs will encourage trade between China and ASEAN countries. It means more productions and lower prices.

The agreement will bring real benefits for Chinese customers, said a Chinese Foreign Ministry spokesman. “In the Beijing markets you will easily find more tropical fruit like durian, which used to be very, very expensive. Now they will be cheaper.” The current tariff rate on durian is 22 percent but will fall to zero in 2010.

In the first 10 months of this year China did US $84.6 billion of trade with ASEAN countries. Experts believe this may reach US $100 billion next year.

Founded in 1967, ASEAN now includes Indonesia, Malaysia, Singapore, the Philippines, Thailand, Brunei, Vietnam, Myanmar, Cambodia and Laos.

56. More and more tropical fruits will enter China because_________.

A. there are too many of them in foreign countries

B. an agreement to cut tariffs was made

C. Chinese people are rich enough to afford them

D. The trading business is developing^

57. Which of the following statements about the agreement is NOT true?

A. It will lead to an increase in trade between China and ASEAN countries.

B. It might cause the prices of ASEAN products to fall.

C. It may greatly benefit the Chinese customers.

D. It won’t bring any benefits to producers of ASEAN countries.

58. We can infer from the story that_______ .

A. China is short of fruit                

B. tariffs are an important factor in foreign trade

C. tropical countries have cheaper fruit

D. China prefers to trade with ASEAN countries

59. The best title for this passage is            

A. Tariff Cut Increases Trade           B. Best Ways To Sell Fruits

C. Tropical Fruit To China               D. China Joins ASEAN

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下列变化过程中,不包含缓慢氧化的是 [ ]

A.动植物的呼吸

B.蔗糖的溶解

C.酒和醋的酿造

D.食物的腐烂

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当长输管道采用清管工艺时,其清管器的接收装置宜设置在()内。

A、管道

B、储配站

C、门站

D、调压站

题型:填空题

正压式自动比例混合系统()。

A.结构复杂

B.造价高

C.操作复杂

D.不实用

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