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【单选题】
After the violent earthquake that shook Los Angeles in 1994, earthquake scientists had good news to report. The damage and death toll could have been much worse. More than 60 people died in this earthquake. By comparison, an earthquake of similar intensity that shook America in 1988 claimed 25,000 victims. Injuries and deaths were relatively less in Los Angeles because the quake occurred at 4:31 a.m. on a holiday, when traffic was light on the city's highways. In addition, changes made to the construction codes in Los Angeles during the last 20 years have strengthened the city's buildings and highways, making them more resistant to quakes. Despite the good news, civil engineers aren't resting on their successes. Pinned to their drawing boards are blueprints for improved quake-resistant buildings. The new designs should offer even greater security to cities where earthquakes often take place. In the past, making structures quake-resistant meant firm yet flexible materials, such as steel and wood, that bend without breaking. Later, people tried to lift a building off its foundation, and insert rubber and steel between the building and its foundation to reduce the impact of ground vibrations. The most recent designs give buildings brains as well as concrete and steel supports. Called smart buildings, the structures respond like living organisms to an earthquake's vibration. When the ground shakes and the building tips forward, the computer would force the building to shift in the opposite direction. The new smart structures could be very expensive to build. However, they would save many lives and would be less likely to be damaged during earthquakes. One reason why the loss of lives in the Los Angeles earthquake was comparatively low is that ______.
A.
new computers had been installed in the buildings
B.
it occurred in the residential areas rather than on the highways
C.
large numbers of Los Angeles residents had gone for a holiday
D.
improvements had been made in the construction of buildings and highways
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【单选题】属于空气飞沫传播的疾病是( )
A.
猩红热
B.
甲型肝炎
C.
蛔虫病
D.
细菌性痢疾
【多选题】属于空气飞沫传播的疾病是( )
A.
流行性感冒
B.
病毒性肝炎
C.
水痘
D.
细菌性痢疾
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A.
职业学校
B.
失业人员
C.
退休人员
D.
竞争对手公司的员工
【单选题】以下引起食物中毒因素中可留后遗症的是 ( )
A.
霉变甘蔗
B.
四季豆
C.
赤霉病麦
D.
肉毒毒素
E.
霉菌毒素性中毒
【单选题】患者,男性,40岁,阑尾切除术后发生粘连性肠梗阻,脐周阵发性疼痛2d,伴恶心、呕吐较频繁,尿少,口渴明显。查体:脉搏96次/min,血压100/70mmHg,腹胀不明显,偶见肠型,脐右侧有轻压痛,肠鸣音亢进。采用禁食、胃肠减压、输液及应用抗生素等非手术治疗。 纠正脱水首先输入的液体是
A.
5%葡萄糖溶液
B.
0.9%氯化钠溶液
C.
平衡盐溶液
D.
右旋糖酐
E.
10%葡萄糖溶液
【单选题】患者,男性,40岁,阑尾切除术后发生粘连性肠梗阻,脐周阵发性疼痛2d,伴恶心、呕吐较频繁,尿少,口渴明显。查体:脉搏96次/min,血压100/70mmHg,腹胀不明显,偶见肠型,脐右侧有轻压痛,肠鸣音亢进。采用禁食、胃肠减压、输液及应用抗生素等非手术治疗。 解除胃肠减压最主要的指征是
A.
腹痛减轻
B.
腹胀解除
C.
呕吐停止
D.
肛门排气
E.
未见肠型
【简答题】注射机的结构组成及各部分的作用。
【单选题】以下引起食物中毒因素中可留后遗症的是(
A.
四季豆
B.
霉变甘蔗
C.
赤霉病麦
D.
肉毒毒素
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A.
平卧位
B.
半坐卧位
C.
侧卧位
D.
去枕平卧位
E.
头低足高位
【单选题】以下引起食物中毒因素中可留后遗症的是( )
A.
霉变甘蔗
B.
四季豆
C.
赤霉病麦
D.
肉毒毒素
E.
葡萄球菌肠毒素
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