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【单选题】
某产妇,28岁。阴道顺产一女婴。做产后腹部检查时,如果扪不到子宫底,此产妇大约在产后的A.
第1天
B.
第7～8天
C.
第2～3天
D.
第4～6天
E.
第10～14天
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举一反三
【单选题】Close the windows, so the dirt from the road won't come into the car.
A.
If the windows are open, the car won't stay clean.
B.
With the windows open, it will be too windy in the car.
C.
With the windows open, there will be too much noise from the traffic on the road.
【简答题】A．To stress the role of dirt. B．To introduce the history of dirt. C．To call attention to the er of dirt. D．To present the change of views on dirt.
【单选题】长度比尺λ L =50的船舶模型，在水池中以1m/s的速度牵引前进，测得波浪阻力为0.02N，则原型中需要的功率N P 为( )kW。
A.
2.17
B.
32.4
C.
17.8
D.
13.8
【简答题】This tie is ____________ , so 1'11 take it to the cleaner's. (dirt)
【单选题】ground-in dirt
A.
dirt which is ground in the fingernails
B.
dirt which is grounded in the fingernails
C.
dirt which is grinded in the fingernails
【单选题】长度比λL=50的船舶模型，在水池中以1m/s的速度牵引前进时，则得波浪阻力为0.02N。原型中需要的阻力（ ）
A.
2.5kw
B.
9.25kw
C.
17.8kW
D.
125kW
【简答题】简述抗原抗体间的主要反应。
【单选题】ground-in dirt 的意思是______.
A.
dirt which is ground in the fingernails
B.
dirt which is grounded in the fingernails
C.
dirt which is grinded in the fingernails
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