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【单选题】
A Country's Standard of Living The 'standard of living' of any country means the average person's share of the goods and services the country produces. A country's standard of living,(51), depends first and(52)on its capacity to produce wealth. 'Wealth' in this sense is not money, for we do not live on money(53)on things that money can buy: 'goods' such as food and clothing, and 'services' such as transport and 'entertainment'. A country's capacity to produce wealth depends upon many factors, most of(54)have an effect on one another. Wealth depends(55)a great extent upon a country's natural resources. Some regions of the world are well supplied with coal and minerals, and have fertile soil and a favorable climate other regions possess none of them. Next to natural resources(56)the ability to turn them to use. China is perhaps as well-off(57)the USA in natural resources, but suffered for many years from civil and external wars, and(58)this and other reasons was(59)to develop her resources. Sound and stable political conditions, and(60)from foreign invasions, enable a country to develop its natural resources peacefully and steadily, and to produce more wealth than another country equally well favoured by nature but less well ordered. A country's standard of living does not only depend upon the wealth that is produced and consumed(61)its own borders, but also upon what is directly produced through international trade.(62), Britain's wealth in foodstuffs and other agricultural products would be much less if she had to depend only on(63)grown at home. Trade makes it possible for her surplus manufactured goods to be traded abroad for the agricultural products that would(64)be lacking. A country's wealth is, therefore, much influenced by its manufacturing capacity,(65)that other countries can be found ready to accept its manufactures.
A.
however
B.
furthermore
C.
similarly
D.
therefore
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【单选题】原子吸收光谱法是基于吸光度与待测元素的含量成正比而进行分析检测的方法,即气态原子对光的吸收符合
A.
多普勒效应
B.
光电效应
C.
朗伯-比尔定律
D.
乳剂特性曲线
E.
波粒二象性
【多选题】种子成熟的标志有
A.
养料输送已经停止,干物质不再增加
B.
种子含水量降低到一定程度
C.
果种皮呈现品种故有颜色
D.
种胚具有萌发能力
【单选题】原子吸收光谱法是基于吸光度与待测元素的含量成正比而进行分析检测的方法,即气态原子对光的吸收符合
A.
原子发射光谱和紫外吸收光谱
B.
红外光谱和质谱
C.
原子吸收光谱和磁共振谱
D.
原子发射光谱和荧光光谱
E.
原子吸收光谱和红外光谱
【简答题】在林木采种时,通常把()作为树木种子成熟的标志。
【单选题】患者,男性,56 岁,因颅骨骨折行急诊手术,护士为其准备麻醉床,不符合要求的操作是( )
A.
可将原有的备用床改铺为麻醉床
B.
橡胶单及中单铺于床中部和床尾部
C.
盖被纵向三折叠于门对侧床边
D.
枕头开口背门并横立于床头
E.
备麻醉护理盘、输液架等
【单选题】原子吸收光谱法是基于光的吸收符合(    ),即吸光度与待测元素的含量成正比而进行分析检测的。
A.
多普勒效应    
B.
朗伯-比耳定律    
C.
光电效应    
D.
乳剂特性曲线
【单选题】患者,男性,岁,因颅骨骨折行急诊手术,护士为其准备麻醉床,不符合要求的操作是( )
A.
可将原有的备用床改铺为麻醉床
B.
橡胶单及中单铺于床中部和床尾部
C.
盖被纵向三折叠于门对侧床边
D.
枕头开口背门并横立于床头
E.
备麻醉护理盘、输液架等
【简答题】问:种子成熟的标准是什么?
【单选题】原子吸收光谱法分析检测是基于光的吸收符合
A.
多普勒效应
B.
朗伯-比尔定律
C.
光电效应
D.
乳剂特性曲线
【单选题】原子吸收光谱法是基于吸光度与待测元素的含量成正比而进行分析检测的,即气态原子对光的吸收符合
A.
多普勒效应
B.
光电效应
C.
朗伯-比尔定律
D.
乳剂特性曲线
E.
波粒二象性
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