(9分)下列A、B、C、D四条曲线表示不同纬度在6月22日的太阳高度日变化,读图

题型:综合

问题:

(9分)下列A、B、C、D四条曲线表示不同纬度在6月22日的太阳高度日变化,读图回答相关问题。

(1)根据图中信息判断:A、B、C、D四地中,此日有太阳直射现象的是____________,能观察到极昼现象的有____________,中午影子半年朝北,半年朝南的是_____。

(2)A、B、C、D四地,按纬度由高到低排列为____________。春分日正午太阳高度角由大到小排列为_____ ____            _

(3)A地经纬度是_______________________________;D地冬半年看北极星的仰角是______________。

(4)一架飞机从B地飞往C地,飞行方向是______________方向。

考点:地球运动的一般特点地球自转的地理意义地球公转的地理意义地球自转运动和公转运动的关系
题型:综合
已知α∈(0,
π
2
)
,且cos2α=
4
5

(1)求sinα+cosα的值;
(2)若β∈(
π
2
,π)
,且5sin(2α+β)=sinβ,求角β的大小.
题型:综合

急性呼吸窘迫综合征病人有()

A.端坐体位 

B.血性痰液 

C.两者均有 

D.两者均无

题型:综合

泵送砼,碎石最大粒径不超过输送管道的()

A、1/5

B、1/4

C、1/3

D、1/2

题型:综合

On 1 July 2006, for the purpose of buying a shipment of a wooden plate, Oriental Construction Materials Company (Oriental Company) sent a purchase order to Wooden Company which contained the terms and conditions of the wooden plate, including quantity, quality, way of payment and time of shipment. The purchase order also indicated that Wooden Company should reply within 10 days upon receipt of the purchase order.On 9 July 2006 Wooden Company sent back a fax and accepted all the terms and conditions of the purchase order, and added the price of the said wooden plate. The fax indicated that Oriental Company should give its final decision within three days upon receipt of the fax.On 11 July 2006 Oriental Company replied with a fax accepting the price forwarded by Wooden Company and demanded that a written letter of confirmation was required for finally concluding a contract.On 15 July 2006 Wooden Company despatched a written confirmation letter, via a DHL package, which contained all the terms and conditions for the sales of the wooden plate as agreed upon by the two parties. The written confirmation letter also provided that the liquidated damages amounting to 10% of the total price of the goods would be borne by the breaching party as the liability for breach of contract.Just during the period of the negotiations between the two parties, the market price of the wooden plate rose quickly. Oriental Company urged Wooden Company to deliver the goods according to the terms of the written confirmation letter, which it alleged to constitute an effective contract, without any delay. However, Wooden Company insisted there was no contract at all between the parties. Under such circumstances Oriental Company filed a law suit against Wooden Company in the local court.Required:Answer the following questions in accordance with the relevant provisions of the Contract Law of China and give your reasons for your answer:

(b) Explain whether there was a contract between the two parties. (4 marks)

题型:综合

《煤矿安全规程》对巷道净断面是如何要求的?

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