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任务型阅读。 Some countries have large numbers of earthquakes. Japan is one of them. One of the most serious earthquakes in world history took place in Japan in 1923. The shock and fires caused by it destroyed much of Tokyo and Yokohama and left more than 7000 dead. Other countries do not have many. For examples, there are few earthquakes in Brirain, France, Germany. There is often a great noise during an earthquake, but it is not always. The earth rocks. Houses fall down. Railway lines are broken. Sometimes many people are killed in an earthquake. People think earthquakes often happen near volcanoes (火山), but this is not always true. The centers of some are under the sea. The bottom of the sea suddenly moves. The powerful forces inside the earth break the rocks. The coast is rocking and great waves are caused there. These waves travel long distances and rush over the land when they reach it. They are strong enough to break down houses and other buildings: sometimes they break more buildings than earthquake itself. What kind of building stands up best in an earthquake? A building with concrete (水泥) walls is perhaps the best. A steel frame (框架) will make it even stronger. The frame holds the different parts together and the walls do not easily fall. There is less chance of fire because concrete and steel (钢材) does not burn. This kind of building is the safest. Today modern concrete and steel apartment buildings are commonly seen in cities of Japan. 第1小题判断正误,(“T”表示正确,“F”表示错误),2-4为简略回答问题,5小题为。 1.The text mainly tells us how to protect ourselves when the earthquake happens. ____________________________________________________________________________ 2.Why do we say that an earthquake is terrible? ____________________________________________________________________________ 3.What kind of building stands up best in an earthquake? 4.In which country are modern concrete and steel apartment buildings commonly seen? 5.There is often a great noise during an earthquake, but it is not always. ____________________________________________________________________________
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【多选题】游离黄酮类化合物的分离常用方法有( )
A.
pH梯度萃取法
B.
分馏法
C.
聚酰胺柱色谱法
D.
重结晶法
E.
两相溶剂萃取法
【判断题】氧化铝常用于黄酮类化合物的分离。
A.
正确
B.
错误
【单选题】在使用力控组态软件设计组态界面时,下列哪些选项不属于工具箱中的基本图元组件( )。
A.
矩形
B.
椭圆
C.
多边形
D.
位图
【判断题】α-碳和羧基碳之间的键不能自由旋转。
A.
正确
B.
错误
【单选题】材料 医疗改革是世界性难题。2010年,美国奥巴马总统的医疗改革法案在国会获得通过。但由于公共卫生属于各州的“保留权”,有过半的州对医改法案发起挑战。2012年6月,美最高法院裁决奥巴马医改法案要求各州扩大医保补助范围的规定侵犯了各州权力。奥巴马表示,如果各州能够实现原定医改目标,各州可以在2014年起单独制定医改法案,并放弃执行联邦政府的计划。 2008年底,我国成立国务院深化医药卫生体制改革...
A.
州政府享有一定的最高权力
B.
政府代表资产阶级的利益
C.
两党通过竞选争夺执政地位
D.
利益集团为政府腐败提供土壤
【单选题】黄酮类化合物的分离常用
A.
水蒸汽蒸馏法
B.
雷氏铵盐法
C.
升华法
D.
聚酰胺色谱法
【简答题】材料 医疗改革是世界性难题。2010年,美国奥巴的医疗改革法案在国会获得通过。但由于公共卫生属于各州的“保留权”,有过半的州对医改法案发起挑战。2012年6月,美最高法院裁决奥巴马医改法案要求各州扩大医保补助范围的规定侵犯了各州权力。奥巴马表示,如果各州能够实现原定医改目标,各州可以在2014年起单独制定医改法案,并放弃执行联邦政府的计划。 2008年底,我国成立国务院深化医药卫生体制改革...
【简答题】系统需求可分为功能需求和 。
【单选题】现实世界中的()构成了问题解决的基本范围,称为该问题的问题域。
A.
属性和状态
B.
实体和状态
C.
实体和操作
D.
状态和操作
【判断题】氧化铝常用于黄酮类化合物的分离。( )
A.
正确
B.
错误
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