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【简答题】
Is Fresh Air Really Good for You? We all grew up hearing people tell us to " go out and get some fresh air " . 36 According to recent studies, the answer is a big YES, if the air quality in your camping area is good. 37 If the air you’re breathing is clean — which it would be if you’re away from the smog of cities — then the air is filled with life-giving, energizing oxygen. If you exercise out of doors, your body will learn to breathe more deeply, allowing even more oxygen to get to your muscles ( 肌肉 ) and your brain. Recently, people have begun studying the connection between the natural world and healing ( 治愈 ) . 38 In these places patients can go to be near nature during their recovery. It turns out that just looking at green, growing things can reduce stress, lower blood pressure, and put people into a better mood ( 情绪 ) . Greenery is good for us. Hospital patients who see tree branches out their window are likely to recover at a faster rate than patients who see buildings or sky instead. 39 It gives us a great feeling of peace. 40 While the sun’s rays can age and harm our skin, they also give us beneficial Vitamin D. To make sure you get enough Vitamin D — but still protect your skin — put on sunscreen right as you head outside. It takes sunscreen about fifteen minutes to start working, and that’s plenty of time for your skin to absorb a day’s worth of Vitamin D. A. Fresh air cleans our lungs. B. So what are you waiting for? C. Being in nature refreshes us. D. Another side benefit of getting fresh air is sunlight. E. But is fresh air really as good for you as your mother always said? F. Just as importantly, we tend to associate fresh air with health care. G. All across the country, recovery centers have begun building Healing Gardens
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【简答题】唐乾陵的布局特色是什么
【单选题】在Fe3+、Al3+、Ca2+、Mg2+的混合液中,用EDTA法测定Fe3+、Al3+的含量,消除Ca2+、Mg2+干扰,最简便的方法是( )。
A.
沉淀分离
B.
控制酸度
C.
配位掩蔽
D.
离子交换
【多选题】必要功能就是指用户所要求的功能以及与实现用户所需求功能有关的功能,下列( )等均为必要功能。
A.
基本功能
B.
使用功能
C.
重复功能
D.
美学功能
E.
辅助功能
【判断题】抽样检验的优点很多,比如节约检验工作量和检验费用,缩短检验周期,减少检验人员和检验设备,而且抽样检验不会错误判断产品质量状况。
A.
正确
B.
错误
【单选题】通信技术是构建智能运输系统的基本要素,以下哪项技术一般不采用?( )
A.
模拟通信技术
B.
数字通信技术
C.
程控交换技术
D.
信息传输技术
【单选题】在 Fe 3+ 、 Al 3+ 、 Ca 2+ 、 Mg 2+ 混合液中 , 用 EDTA 法测定 Fe 3+ 、 Al 3+ 含量时 , 为了消除 Ca 2+ 、 Mg 2+ 的干扰 , 最简便的方法是 ( )
A.
沉淀分离法
B.
溶剂萃取法
C.
配位掩蔽法
D.
控制酸度法
【判断题】If the company is not able to pay its debts, shareholders are liable.
A.
正确
B.
错误
【多选题】抽样检验的主要优点有( )。
A.
能提供产品完整的检验数据
B.
能节约检验工作量和检验费用
C.
能缩短检验周期
D.
能及时发现过程出现的质量问题
E.
没有风险
【单选题】某无色气体可能由CH 4 、NH 3 、H 2 、CO、CO 2 和HCl几种气体组成,在恒温恒压条件下,将此混合气体通过浓H 2 SO 4 时,总体积基本不变,通过澄清石灰水,未见变浑浊,继续通过Ba(OH) 2 溶液,产生白色沉淀.把剩余气体导出后,在氧气中能点燃,燃烧产物不能使CuSO 4 粉末变色.则原混合气体的成份是(  )
A.
HCl和CO
B.
HCl、CO 2 和CO
C.
CO和CH 4
D.
HCl、CO 2 和CH 4
【多选题】必要功能就是指用户所要求的功能以及与实现用户所需求功能有关的功能,下列( )等均为必要功能
A.
重复功能
B.
过剩功能
C.
使用功能
D.
美学功能
E.
辅助功能
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