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【多选题】
下述关于群桩工作特点的描述中, 哪些说法是不正确的?A.
对桩距大于6倍桩径的端承桩桩群， 其总承载力等于各单桩承载力之和
B.
群桩效应主要针对端承桩而言
C.
桩距过小的群桩， 应力叠加现象显著， 桩士相对位移减小， 桩侧阻力不能有效发挥
D.
应力叠加引起桩端平面应力增大， 单位厚度的压缩变形减小
E.
桩数超过3根的桩基， 均需考虑群桩效应
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举一反三
【单选题】The total amount of O2 carried by the circulation to the tissues/min. (oxygen delivery or total available oxygen)
A.
Normally equals the rate of O2 consumption by the body/min.
B.
Is normally more than 95 per cent combined with haemoglobin.
C.
Must fall by about half if haemoglobin concentration is halved.
D.
Is more closely related to PO2 than to percentage saturation of the blood with O2.
E.
Must double if body oxygen consumption doubles.
【单选题】We may learn from Paragraph 5 that e-readers______.
A.
give authors erroneous signals of people's reading progress
B.
deprive readers of the pleasure of undisturbed reading
C.
arouse radical changes in people's book reading habits
D.
facilitate commercial manipulation of book content
【单选题】Such an attitude based on erroneous beliefs or preconceptions
A.
steretype
B.
prejudice
C.
approval
D.
objection
【单选题】The fallacy of composition is the erroneous view that:
A.
an increase in the supply of money will cause a general increase in the level of prices.
B.
a small change in an economic variable will have an unrecognizable but significant effect on the economy.
C.
when two s are associated, the one observed first must have caused the secon
D.
if something is true for an individual, then it must also be true for a group.
【多选题】What factors should be considered when a patient is given anesthesia?
A.
the type of operation
B.
the state of the patient's health
C.
the patient's wishes
D.
other factors
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