进行肺癌的病因学研究时，应遵循的流行病学病因观是-我要搜题网

[单项选择]下列除哪项外，都是引起走锚的原因。（）
A. 锚链长度不足
B. 抛锚方法不当
C. 能见度变差
D. 大风浪

[单项选择]适合于分批近拣货，拣货时间固定且处理紧急插单的时间固定的补货工作的补货方原则是（）。
A. 批次补货
B. 定时补货
C. 随机补货
D. 随时补货

[简答题]阐述停煤气作业的安全要点。

[单选题]高处作业上下抛掷工具,下面未设围栏,可能引发( )
A.挤压损伤
B.剪切损伤
C.落物伤人,设备损坏

[不定项选择题]共用题干 A Great Quake Coming?

Everyone who lives in San Francisco knows that earthquakes are common in the Bay Area一and they
can be devastating. In 1906,for example,a major quake destroyed about 28,000 buildings and killed
hundreds,perhaps thousands of people.Residents now wonder when the next"Big One"will strike.It's
bound to happen someday. At least seven active fault（断层）lines run through the San Francisco area. Faults
are places where pieces of Earth'S crust（地壳）slide past each other.When these pieces slip,the ground
shakes.
To prepare for that day,scientists are using new techniques to reanalyze the 1906 earthquake and pre-
diet how bad the damage might be when the next one happens.
One new finding about the 1906 earthquake is that the San Andreas fault split apart faster than scientists
had assumed at the time. During small earthquakes,faults rupture（断裂）at about 2.7 kilometers per second.
During bigger quakes,however.ruptures can happen at rates faster than 3.5 kilometers per second.
At such high speeds,massive amounts of pressure build up,generating underground waves that can
cause more damage than the quake itself. Lucky for San Francisco , these pressure pulses（脉冲）traveled
away from the city during the 1906 event.As bad as the damage was,it could have been far worse.
Looking ahead,scientists are trying to predict when the next major quake will occur. Records show that
earthquakes were common before 1906.Since then,the area has been relatively quiet.Patterns in the data,
however,suggest that the probability of a major earthquake striking the Bay Area before 2032 is at least 62
percent.
New buildings in San Francisco are quite safe in case of future quakes.Still,more than S4 percent of the
city’s buildings are old and weak.Analyses suggest that another massive earthquake would cause extensive
damage.
People who live there today tend to feel safe because San Francisco has remained pretty quiet for a
while.According to the new research,however,it's not a matter of"if" the Rig One will hit.It',just a mat-
ter of when. Scientists will be able to predict the exact time of an earthquake soon.
A.Right
B.Wrong
C.Not mentioned

[单项选择]进行肺癌的病因学研究时，应遵循的流行病学病因观是A. 概率论的因果观点B. 经验的重复观点C. 生态学的观点D. 整体性观点E. 特异病因学观点

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[单项选择]进行肺癌的病因学研究时，应遵循的流行病学病因观是
A. 概率论的因果观点
B. 经验的重复观点
C. 生态学的观点
D. 整体性观点
E. 特异病因学观点