首页
登录
职称英语
After the violent earthquake that shook Los Angeles in 1994, earthquake sci
After the violent earthquake that shook Los Angeles in 1994, earthquake sci
游客
2023-11-14
51
管理
问题
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. [br] The function of the computer mentioned in the passage is to ______.
选项
A、counterbalance an earthquake’s action on the building
B、predict the coming of an earthquake with accuracy
C、help strengthen the foundation of the building
D、measure the impact of an earthquake’s vibrations
答案
A
解析
作者在第五段申明确指出了计算机的作用:“When the ground shakes and the building tips forward,the computer would force the building to shift in the opposite direction.”,故A 是正确答案。而B 与原文信息不符,C 和D 在文中未提到。
转载请注明原文地址:https://tihaiku.com/zcyy/3185516.html
相关试题推荐
Alltheschools______becauseoftheearthquake,studentsandteachershadtog
Theearthquakeof26thDecember2004resultedinoneoftheworstnaturald
Theearthquakeof26thDecember2004resultedinoneoftheworstnaturald
Theearthquakeof26thDecember2004resultedinoneoftheworstnaturald
Theearthquakeof26thDecember2004resultedinoneoftheworstnaturald
Theearthquakeof26thDecember2004resultedinoneoftheworstnaturald
Theearthquakeof26thDecember2004resultedinoneoftheworstnaturald
Theearthquakeof26thDecember2004resultedinoneoftheworstnaturald
Theearthquakeof26thDecember2004resultedinoneoftheworstnaturald
Theearthquakeof26thDecember2004resultedinoneoftheworstnaturald
随机试题
AsCommander-in-Chiefofthearmedforces,Ihavedirectedthatallmeasures___
BeingObjectiveonClimateChange[A]Lastweek,CraigRucker,
求解微分方程:
李某,男,35岁,职业是铅矿工人,近1年来出现头痛、乏力、失眠、多梦、记忆力减退
( )是家庭教育理财规划的核心,通常由基本教育和素质教育组成。A.职业教育
下面谱例中,音乐动机的发展手法是()。 A.重复 B.模进 C.模
患者,男,52岁。近半年来发现站立时阴囊出现梨形肿块,平卧时可消失,局部检查发现
从主观原因分析,造成工程项目成本失控的关键是()。A.成本责任不到位、管
集团公司人力资源管理部门应对各级组织机构的工作效率进行评定,具体的考评指标有(
随着城市化进程的推进,越来越多的跨地区移民进入城市,相对于在老家的状态,他们可能
最新回复
(
0
)