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【单选题】
通过α粒子散射实验，提出原子有核模型的科学家是（）。A.
汤姆孙 (Thomson)
B.
玻尔 (Bohr)
C.
卢瑟福 (Rutherford)
D.
克 (Planck)
拍照语音搜题，微信中搜索"皮皮学"使用
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【单选题】In a suspension bridge, the shape of the suspension cables is parabolic. The bridge shown in the figure has towers that are 400 m apart, and the lowest point of the suspension cables is 100 m below th...
A.
x 2 = 800 y
B.
y 2 = 1,600 x
C.
x 2 = 400 y
D.
x 2 = 1,600 y
E.
x 2 = -400 y
【简答题】A．The man will take the trip during January. B．The woman has been to New Mexico. C．The man will take skate and skis with him. D．The weather at high altitude is great.
【简答题】A．The A41 at the Dome corner has few cars. B．The A1M near Hatfield, Harrow Road has heavy traffic. C．The A404, Harrow Road is very busy with many cars. D．The A1M is now flowing freely without problems...
【单选题】In the last paragraph, the word "weighed" has the closest m eaning with _
A.
had great influence
B.
became a burden
C.
considered carefully
D.
measured accurately
【简答题】手心热甚于额上热者为____;手足背热甚于手足心者为____。
【单选题】What does the woman discover when she looks at the records on her computer?
A.
The man has mistakenly received someone else's books.
B.
The man changed his major from art to business,
C.
The man recently moved off campus.
D.
There are two students named Robert Smith.
【单选题】A towboat has the same draft as the barges it is pushing ahead. If the distance from the stern of the towboat to the head of the tow is 260m，where is the approximate location of the pivot point of the...
A.
At the head of the tow
B.
75m from the head of the tow
C.
120m from the head of the tow
D.
180m from the head of the tow
【单选题】What do we learn form. the dialogue?
A.
The man came to the new house by bus.
B.
The man has moved to a new house.
C.
The woman has moved to a new house.
【简答题】如手足心与手足背比较，若手足背热甚者，多为（）发热；手足心热甚者，多为（）发热。手心与额上比较，若额上热甚于手心热者为（）；手心热甚于额上热者为（）
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