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【单选题】
下列关于惯性说法正确的是
A.
静止在草坪上的足球没有惯性
B.
高速公路汽车限速是为了安全,因为速度越大惯性越大
C.
百米赛跑的运动员创线后还要跑出去一段距离,是由于受到惯性的作用
D.
歼击机投入战斗前要抛掉副油箱,这是为了减小惯性增加战斗机的灵活性
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【单选题】Research completed in 1982 found that in the United States soil erosion ______.
A.
reduced the productivity of farmland by 20 percent
B.
was almost as severe as in India and China
C.
was causing significant damage to 20 percent of farmland
D.
could be reduced by converting cultivated land to meadow or forest
【单选题】Soil erosion means
A.
滑坡
B.
干旱
C.
水土流失
D.
沙漠化
【简答题】患者,男,56岁,发作性胸痛半年,每当急走或骑自行车上坡时感觉左胸压榨样疼痛,停止活动后,休息几分钟可以缓解,冠状动脉造影显示冠状动脉有狭窄,结合所学知识进行分析:1.该患者的临床诊断是什么?2.主要存在哪些护理问题?3.患者胸痛发作时应该如何处理?
【单选题】患者,男,56岁,脑血栓半年。突发胸痛 4h,ECG示V3R~5R导联出现rS型,ST段弓形上抬,BP 88/60mmHg,HR 56/min,偶发室性期前收缩。给吸氧及肌内注射哌替啶后疼痛缓解,还需要立即首选的处理为
A.
地尔硫
B.
硝酸甘油
C.
急诊介入治疗
D.
阿托品
E.
普鲁卡因胺
【单选题】Soil erosion turns field into .
A.
steppe
B.
deserts
C.
debris flow
D.
--
【单选题】某男,56岁。胸脘痞闷,按之则痛,伴咳痰黄稠,舌苔黄腻,脉滑数,治疗当首选
A.
大陷胸汤
B.
小陷胸汤
C.
半夏厚朴汤
D.
滚痰丸
E.
贝母瓜蒌散
【多选题】Soil erosion includes the three processes of
A.
Dissolution
B.
Detachment
C.
Transport
D.
Deposition
E.
Adsorption
【简答题】土壤侵蚀类型 soil erosion type
【单选题】The sharp decrease of soil erosion in 1982 resulted from
A.
the education of the USDA on farming technology.
B.
the practices of environmental protection on farming.
C.
the prevention of water runoff in the two large areas.
D.
the protection of plant residues around the whole year.
【简答题】危险品有几大类?内容分别是什么?
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