读“我国中纬度地区某地某日太阳运动示意图”,回答下列问题。 (1)图中显示该地

题型:综合

问题:

读“我国中纬度地区某地某日太阳运动示意图”,回答下列问题。

(1)图中显示该地区该日4:30日出19:30日落,则该地该日昼长为____小时,其昼夜长短状况为____(昼长夜短或昼短夜长)。

(2)此日北极地区可能出现____(极昼或极夜)现象。

(3)如果该日是,则该日太阳直射的纬线是____,此后太阳的直射点将向___移动。

考点:地球的公转运动
题型:综合

产生冷热裂纹的主要原因有()

A.铸件的厚薄不一

B.合金本身的原因

C.铸型的冷却方式不合理

D.铸型在冷却过程中多受到剧烈的振动

E.铸型的强度过大

题型:综合

首先请阅读下列国外媒体上的插图及提示性文字:

         

   

以下是关于这些插图的简要评论。请把评论与相关插图及提示性文字匹配起来。

小题1:The debate has been raging for years over the safety of, and necessity for, childhood vaccinations, which has been so much so that it is termed "The Vaccine War". The debate has only a few moments that might be inspiring to those who have been following this now familiar issue.

小题2:There are certainly benefits of using a star in a film. It makes the film easier to market. Stars also help sell more tickets and drive DVD sales, which are a big part of studio revenue. However, a star does not guarantee success. The simple fact is that if you pay a star a great deal of money for a film that people don't want to see, then it won't work.

小题3:They are barely in their twenties and are already multimillionaires. At the age when many people are looking for their first job, the youngsters of The Sunday Times Rich List are buying country estates or jetting off to their overseas homes. Daniel Radcliffe, for example, who plays Harry Potter, has a fortune of 42 million, at 20.

小题4:Millions of jobless Americans, who might be suffering in anxiety and lacking a sense of security, are showing up at emergency rooms of state-owned hospitals, contributing to a longer waiting time and a higher risk of cursory treatment by overworked doctors and nurses.

小题5:Alice Miller, a psychology expert, who died at 87 at home in Provence, France, on April 14, repositioned the family as a central place of abnormal psychological function with her theory that parental power and punishment lay at the root of nearly all human problems.

题型:综合

一男性年轻人右大腿下端肿痛2个月余。X线片见股骨下端有境界不清的骨质破坏区,有放射状阴影,两端可见骨膜三角。最可能的诊断是()

A.骨髓炎

B.骨结核

C.骨肉瘤

D.骨巨细胞瘤

E.骨转移癌

题型:综合

结核性溃疡的临床表现是()

A.溃疡形态与创伤因子楔合

B.表面凹陷,覆盖黄色假膜,边缘整齐

C.基底菜花状,浸润广且有硬结

D.基底桑椹样肉芽肿,边缘鼠啮状,潜掘状

E.溃疡表面覆盖棕黄色薄痂,溃疡底部触诊如硬币或软骨样

题型:综合

目前我国的旅行社企业已经处于一个()环境之中,中国旅行社企业将直接面临来自国际旅行社企业巨头的竞争。

A.垄断市场

B.完全市场竞争

C.不完全市场竞争

D.寡头垄断市场

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